Down-hole testing and measuring complex and method for its installation in horizontal well

FIELD: oil and gas industry.

SUBSTANCE: down-hole testing and measuring complex includes earth control station with telemetric data system connected by a logging cable with submerged-type electric pump at the end of tubing string, system of measuring modules including sensors for recording of parameters (yield, pressure, temperature, moisture content) and driving machine for their delivery to horizontal section of a well connected by a logging cable that provides rigid mounting for the system of measuring modules and transfer of data to the control station. Logging cables of the system of measuring modules telemetric system unit are connected by cable connectors. Driving machine contains two walking modules connected electrically and further driven by electrical micro-drives and sequential movement of wedged supports. Installation of the down-hole testing and measuring complex is performed in two stages. At first system of measuring modules is lowered to a well by means of winch with survey cable connected by a cable connector with a logging cable of the system of measuring modules passing through a groove in the wall of an installation pipe mounted at the well surface at the end of tubing string and by the other butt end - to the deadman in which tube there is a movable logging cable. The system of measuring modules is lowered at first up to driving machine turning to a relatively horizontal section, then by means of the driving machine it is hold to the relatively horizontal section until cable connector seats in the deadman tube; the latter is lowered by means of the installation pipe to the preset depth and fixed on the well bore. Thereafter power supply is switched odd in the micro-drive, by means of the winch socket with the survey cable is disconnected from connector pin and the installation pipe is lifted to the surface. At the second stage submerged-type electric pump is lowered to the well with logging cable and socket of cable connector contact pair filled by liquid sealant which is by means of a centring skid connected to the logging cable for the system of measuring modules.

EFFECT: increase of operational efficiency during installation of the bottom-hole complex.

6 cl, 5 dwg

 

Group of inventions relates to the oil industry, in particular, to devices for measuring and monitoring of well parameters and methods for their installation, which can find application in the operation of horizontal wells equipped with motorized pumps.

Known downhole instrumentation complex containing connected in series between a telemetry module and at least one ligament node connected via logging cable with ground equipment (Patent RU №2425213 C1. Downhole instrumentation complex.- IPC: EV 47/00, EV 47/12. - 27.07.2011).

A device for control of the underlying technological parameters during well operation, including wellhead equipment, electrical submersible pump system for the transmission of telemetry data, land measuring unit and the downhole instrument unit, made in the form of a system of measuring modules, sequentially interconnected by segments of the rigid logging cable, providing a rigid attachment of the measuring units in the wellbore, with the number of modules equal to the number of productive layers well, and the transfer of information from the measurement module to the electrical submersible pump and through a system of transmission of telemetry information is rmacie power cable electrical submersible pump on land measuring Board (Application RU # 2007130921 A. Device for control of the deep parameters during well operation. - IPC: EV 47/00. - 20.02.2009).

A device for control of the underlying technological parameters during well operation, comprising a winch with a logging cable, wellhead equipment, ground-based measurement system and the downhole instrument unit, the latter is in the form of measuring modules sequentially interconnected by means of pipe sections, the upper of which is connected through a transitional perforated camera to the bottom of the riser pipe for production wells. The number of units is equal to n-1, where n is the number of productive layers well. Moreover, during the operation of wells with high wellhead pressure transition perforated camera rigidly connected with the bottom of the tubing. When mechanized well operation transition perforated camera mounted on the lower end of the tubing below the pump intake (Patent RU №2270918 C1. Device for control of the deep parameters during well operation. - IPC: EV 47/00. - 27.02.2006). This unit is adopted for the prototype.

A disadvantage of the known technical solutions is their limited functionality when operating conventionally horizontal wells.

The known method of preparation for work the e downhole jet unit for horizontal well logging, including the descent into the well pipe string with the packer and support, which made the pass window and seat with subsequent respecrively packer, then on the surface carry out installation of equipment on a smooth flexible tube, to which the lower end of the flexible pipe is first passed through a passage sealing host with the ability to move the flexible tube relative to the sealing site, then it is passed through the stepped pass channel and the channel for supplying the pumped medium hull jet pump, then to the lower end of a smooth flexible tube is connected to the handpiece and through the last fix on the smooth flexible tube device for carrying out research or processing of the productive formation wells such as the logging device or a hammer, then place the sealing site in the stepped pass channel of the jet pump and hold the shutter flexible pipe with jet pump and the device for carrying out research or processing of the productive formation through the string of pipe into the well, upon reaching the jet pump bearings are installing a jet pump on the seat support, and then continue the descent smooth flexible pipe until such time as a survey instrument or processing of the productive formation reaches of the study area or processing ol the reproductive layer, in the process of descent flexible tube device for the study of the productive formation, conduct a background check of the values of physical parameters of rocks, such as temperature fields (Patent RU №2252338 C1. Method of preparation for downhole jet unit for logging horizontal wells. - IPC7: F04F 5/54, EV 47/12. - 20.05.2005). The disadvantage of this method is the technological complexity of installation of the equipment due to numerous technological operations, reducing the effectiveness of its application.

The known method of preparation for downhole pumping equipment, including the installation of equipment on the surface, the descent to the string of pipe of the pump, manifold and install them at a specified depth. In this case, initially carry out the descent into the well pumps with submersible motor to the cable connector. Then make installation of downhole pumping equipment on the surface, including passing the power cable through the wall elements of the packer, the connection of the power cable with submersible motor, the setting of the packer with the groove on the pump or tubing, filling the groove in the bore of a packer fluid sealing filler, followed by immersing in it a power cable, keeping the liquid is about sealing filler to full or partial solidification and installation of hinged elements on the packer. Then carry out the descent into the well pumps with submersible motor and packer with hinged elements to a predetermined depth, Petrovka packer, installation of wellhead equipment with cable entry and connection of the power cable to the ground control station (Patent RU №2414584 C1. Method of preparation for downhole pumping equipment Garipova. - IPC: EV 23/00. - 20.03.2011). A disadvantage of the known technical solutions adopted for the prototype is limited functionality, allowing only vertical wells.

The closest analogue of the method of installation in the borehole instrumentation package is the delivery method of logging tools in the well, including the descent of the protective container attached to the end of the column, consisting of a set of pipes, a descent into the protective container on wireline logging tool. On the bottom tube installing the bottom module in which place geophysical instrument worn on him packer-nozzle. On the lower module establishes an upper pipe and shall descend to a predetermined depth. The descent of the device carried out on non-detachable cable. After completion of the descent over the top tube of the column set top module. The modules are designed as tubes with broadening the side of the casing stake is NNI to ensure free passage of the wireline between the upper pipe and the casing. Inside the lower module by broadening has two centering roller and sealing device for transmission of the wireline (Application RU # 2007111404 AND invention. The delivery method of logging tools in the well. - IPC: EV 47/00. - 10.10.2007). This technical solution adopted for the prototype.

The disadvantage of this method is the technological complexity of installation of the equipment in the well, which reduces the efficiency of operation of the wells.

The main task, which directed the claimed group of inventions is to accelerate action in preparation for downhole instrumentation complex by reducing labor costs and improving the efficiency of the operation of wells with conditionally horizontal faces.

The technical result from the use of this group of inventions is to optimize preparation for operation downhole instrumentation complex and effectiveness of the operation of wells with conditionally horizontal faces.

This objective is achieved in that the downhole instrumentation complex containing ground control station with telemetry system information connected with logging cable with a submersible electrically driven pump, tubing pipes, si is the topic of measuring modules includes geophysical sensors recording downhole parameters (flow rate, pressure, temperature, moisture content) and the propulsion deliver them into the quasi-horizontal section of the well, connected in series to each other at a given distance from each other, providing a rigid attachment of the measuring modules and propulsion in the borehole and transmitting information to the control station, in accordance with the proposed technical solution,

geophysical sensors recording downhole parameters and the propulsion system of the measuring modules are connected geophysical cables, and geophysical cable from the system of measurement modules connected to the logging cable from the telemetry unit, located at the end of the electric submersible pump, by means of a cable connector, while the geophysical cable from the telemetry unit is placed in a socket attached to the telemetry unit at the end of which is equipped with socket cable connector, oriented with respect to the return pin contact pair cable connector whose position is fixed by another branch pipe fixed in a mechanical anchor, covering geophysical cable from the system measuring modules;

the mover includes serially coupled between a and electrically connected the ground control station geophysical cables two walking module, driven by electric mikropriborov alternating permutations rasklinivanie spring supports on the wall of the wellbore;

socket cable connector is equipped with a catcher pin contact pair;

on the pipe attached to the telemetry unit, a centralizer orientation of the socket cable connector relative to the response of the pin contact pair.

This objective is achieved in that in the method of installation of control and measuring system in a horizontal borehole, comprising an Assembly of equipment on the surface of the well, the descent into the well by means of a winch with a logging cable system measuring modules containing geophysical sensors recording downhole parameters (flow rate, pressure, temperature, moisture content) and the propulsion deliver them into the quasi-horizontal section of the well, the descent electrically driven pump on the tubing pipe and installation at the desired depth, according to the proposed technical solution,

installation of downhole instrumentation are complex in two steps, initially lowered into the well system of measuring modules using the winch with the logging cable and fix logging cable in a mechanical anchor, which on the surface of the well fix advanced technology is prepared installation pipe top sub at the end of the column tubing, and the lower sub connected to a mechanical anchor, the logging cable connect the logging cable from the system measurement module cable connector pin which is passed through the through groove, made in the wall of the mounting tube width, the greater the lateral dimension of the cable connector, followed by the descent system of the measuring modules with the help of the winch by passing a logging cable through the groove of the installation of pipes and pipe in mechanical anchor, and first under the action of the efforts of its own weight to rotate the propulsion system of the measuring modules conditionally horizontal section of the well, which is connected in series through logging and geophysical cables from the winches include power mikropriborov mover, the last stretch system sensor modules is a quasi-horizontal section of the well until the landing of the cable connector in the socket mechanical anchors, in which is fixed a pin contact pair cable connector, then using the installation of pipes and columns tubing mechanical anchor with cable connector down into the hole and fixed at a given depth, which determines the system reaches a measuring modules of a given zone in semi-horizontal section of the well, the donkey which disables the power supply mikropriborov, using the winch and hoist cable disconnect the socket from pin cable connector and remove the logging cable with socket cable connector from the well through the installation groove of the pipe, the last raise on the column tubing to the surface of the well and produce the dismantling of the installation of the pipe, a second reception on the surface of the wells produce mounting on the end of the column tubing electrically driven pump unit, telemetry and logging cable with socket contact pair cable connector installed on the end of the pipe, which is then lowered into the borehole and movement oriented sockets on the fixed pin contact pair cable connector under the action of the efforts of the contact pressing carry out joint contact pair cable connector and the electrical connection of geophysical cables from the unit telemetry ground station control and measurement system modules in the borehole;

before descending into the well electrically driven pump unit, telemetry and logging cable cavity trap pin and socket cable connector pre-filled liquid sealing filler and pre-close the aperture, the latter at the junction of the contact pair is broken pin on the cable connector and the movement of the pin displaces the liquid sealing filling of cavities trap pin and socket, sealing cable connector.

Conducted by the applicant's analysis of the level of technology has allowed to establish that the analogs are characterized by the sets of characteristics is identical for all features of the declared downhole control and measurement system and method of mounting it in the well, no. Therefore, each of the claimed technical solution meets the condition of patentability "novelty".

Search results of known solutions in this field of technology in order to identify characteristics that match the distinctive features of prototypes signs of each of the proposed technical solution, showed that they do not follow explicitly from the prior art. Of certain of applicant's prior art there have been no known impact provided the essential features of each of the proposed technical solutions transformations on the achievement of the technical result. Therefore, each of the proposed technical solutions meet the condition of patentability "inventive step".

In the present application for patent complied with the requirement of unity of invention, since the downhole control and measurement system and method of mounting it in a horizontal wells are designed to perform measurement and control of process parameters conditionally g is horizontal wells equipped with motorized pumps. Technical solutions solve the same task - to increase the efficiency in assembling the downhole instrumentation complex and effectiveness of downhole equipment.

Figure 1 shows a General diagram of the downhole instrumentation complex; figure 2 - measuring module; figure 3 - joint contact pair cable connector; 4 - mover system measuring modules, figure 5 - scheme of the installation in horizontal well control and measurement system.

The downhole control and measurement system includes a ground control station 1 system telemetry data connected geophysical cable 2 with a submersible electrically driven pump 3 and the telemetry unit 4, located at the end of the actuator 5 submersible pump 3, the column tubing 6, the measuring system modules 7 propeller 8 delivery in their area conditionally horizontal section 9 wells, serially connected to each other at a given distance from each other logging cable 10, and a rigid fastening of the measuring modules 7 and propeller 8 in the borehole and transmitting information to the control station 1 (Figure 1). The measuring system module 7 includes geophysical sensors register with vaginyh process parameters: flow rate 11, pressure 12 temperature 13 and moisture content 14 concluded between the centralizers 15, the locking position of geophysical sensors relative to the wellbore (Figure 2). Geophysical cable system 10 of the measuring module 7 is connected through a cable connector 16 logging cable 2 from the telemetry unit 4 associated with the ground control station 1. Geophysical cable 2 movably placed in the pipe 17. At the end of the logging cable 2 set the outlet 18 of the cable connector 16, which is fixed on the end of pipe 17 and is oriented relative to the pin 19 pin pair by a clamp 20 that is installed on the pipe 17. The outlet 18 of the cable connector 16 provided with a trap 21 to capture pin 19 at the junction of the contact pair cable connector 16 (Fig 3). The position of the pin 19 of the cable connector 16 fixed pipe 22 covering the logging cable 10 system measuring modules 7 and secured in a mechanical anchor 23. The propulsion device 8 includes two serially coupled between a and electrically connected walking module 24, driven by electric mikropriborov alternating permutations rasklinivanie spring supports 25 in the wall of the wellbore (Figure 4).

Installation of control and measuring complex horizontal well carried out is carried out in two steps. The first reception assembled on the surface 26 of the well and run into the well through the winch 27 and wireline 28 system measuring modules 7, containing geophysical sensors 11, 12, 13 and 14 of the Desk downhole parameters and their delivery vehicles 8 in a given area conditionally horizontal section 11 of the well. To do this, at the end of the logging cable 28 are mounted socket 18 pin pair cable connector 16. On the surface 26 of the well logging cable 28 connects the logging cable 10 system measuring modules 7 cable connector 16, passed through the groove 29, made in the wall of the mounting tube 30 width, the greater the size of the cable connector 16. Installation pipe 30 is mounted to the upper sub at the end of the column tubing 6 and the bottom with a mechanical anchor 23 in the pipe 22 which is placed geophysical cable 10 with the possibility of longitudinal movement. The descent system of the measuring modules 7 is performed using the winch 27 by passing a logging cable 2 through the groove 29 installation pipes 30 and a mechanical anchor 23, and the first under the action of the efforts of its own weight to rotate the propeller 8 in a relatively horizontal portion 11 well, when connected in series logging 28 and 10 geophysical cables included the t power mikropriborov mover 8, the last move the measuring system modules 7 a quasi-horizontal section 11 of the well until the landing of the cable connector 16 in the socket 22 of the mechanical armature 23 which is fixed a pin to 19 pin cable connector 16, and then a mechanical anchor 23 cable connector 16 is lowered on the tubing pipe 6 into the well through the installation of the pipe 30 and is fixed at a given depth, which determines the system reaches a measuring modules 7 a given area in a relatively horizontal portion 11 of the well. After that, turn off the power supply mikropriborov. Using the winch 27 disconnect the socket 18 pin 19 pin pair cable connector 16 and remove the logging cable 28 with the outlet 18 of the cable connector 16 from the well through the groove 29 installation of the pipe 30, the last raise on the column tubing 6 to the surface 26 of the well and produce the dismantling of the installation of the pipe 30 (Figure 5). The second receiving surface 26 will install at the end of the column tubing 6 electrically driven pump 3 with the telemetry unit 4 and geophysical cable 2, the outlet 18 of the cable connector 16 on the end of the logging cable 2 pre-filled liquid sealing filler and pre-close the aperture 31. Then carry out the descent driven n the Sosa 3 column tubing 6 and install it on the depth of docking logging cable 2 from the telemetry unit 4 logging cable 10 system measuring modules 7 through a cable connector 16. Movement of the socket 18 in the direction of the pin 19 pin pair cable connector 16 trap 21 on the outlet 18 picks up the pin 19 pin pair cable connector 16, closes the aperture 31 on the catcher 21 and the mating contact pair cable connector 16 connects the geophysical cable 2 from the telemetry unit 4 logging cable 10 in the mechanical anchor 23, displacing the pin 19 of the liquid sealing filler from the cavity of the socket contact pair 18, thereby sealing cable connector 16. Thus connects the measuring system modules 7 to ground control station 1 with the system processing the telemetry data.

Proposed borehole instrumentation complex allows to optimize the installation of downhole instrumentation complex and increase the efficiency of the operation of wells with conditionally horizontal faces.

1. Downhole instrumentation complex containing ground control station with telemetry system information connected with logging cable with a submersible electrically driven pump, tubing pipe, the measuring system modules, including geophysical sensors recording downhole parameters (flow rate, pressure, temperature, moisture content) and the thruster delivery in conventionally-l the effective area of the borehole, serially connected to each other at a given distance from each other, providing a rigid attachment of the measuring modules and propulsion in the borehole and transmitting information to the control station, wherein the geophysical sensors recording downhole parameters and the propulsion system of the measuring modules are connected geophysical cables, and geophysical cable from the system of measurement modules connected to the logging cable from the telemetry unit, located at the end of the electric submersible pump, by means of a cable connector, while the geophysical cable telemetry unit is placed in a socket attached to the telemetry unit at the end of which is equipped with socket cable connector, oriented with respect to the response pin contact pair cable connector whose position is fixed by another branch pipe fixed in a mechanical anchor, covering geophysical cable from the system of measurement units.

2. The downhole control and measurement system according to claim 1, wherein the mover includes serially coupled between a and electrically connected with the ground control station geophysical cables two walking module driven by electric mikropriborov powered the second permutation rasklinivanie spring supports on the wall of the wellbore.

3. The downhole control and measurement system according to claim 1, characterized in that the electrical cable connector is equipped with a catcher pin contact pair.

4. The downhole control and measurement system according to claim 1, characterized in that the nozzle attached to the telemetry unit, is the centralizer of the orientation of the cable outlet connector relative to the response of the pin contact pair.

5. The method of installation of control and measuring system in a horizontal borehole, comprising an Assembly of equipment on the surface of the well, the descent into the well by means of a winch with a logging cable system measuring modules containing geophysical sensors recording downhole parameters (flow rate, pressure, temperature, moisture content) and the propulsion deliver them into the quasi-horizontal section of the well, the descent electrically driven pump on the tubing pipe and installation at a given depth, characterized in that the installation of downhole instrumentation are complex in two steps, initially lowered into the well system of measuring modules using the winch with the logging cable and fix logging cable in a mechanical anchor, which on the surface of the well fix advanced custom installation pipe top sub at the end of the column n is sosno tubing, and the lower sub connected to a mechanical anchor, the logging cable connect the logging cable from the system measurement module cable connector pin which is passed through the through groove, made in the wall of the mounting tube width, the greater the lateral dimension of the cable connector, followed by the descent system of the measuring modules with the help of the winch by passing a logging cable through the groove of the installation of pipes and pipe in mechanical anchor, and first under the action of the efforts of its own weight to rotate the propulsion system of the measuring modules conditionally horizontal section of the well, which is connected in series through logging and geophysical cables from the winches include power mikropriborov mover, the last stretch system sensor modules is a quasi-horizontal section of the well until the landing of the cable connector in the socket mechanical anchors, in which is fixed a pin contact pair cable connector, then using the installation of pipes and columns tubing mechanical anchor with cable connector down into the hole and fixed at a given depth, which determines the system reaches a measuring modules of a given zone in semi-horizontal section of the well, the donkey which disables the power supply mikropriborov, using the winch and hoist cable disconnect the socket from pin cable connector and remove the logging cable with socket cable connector from the well through the installation groove of the pipe, the last raise on the column tubing to the surface of the well and produce the dismantling of the installation of the pipe, a second reception on the surface of the wells produce mounting on the end of the column tubing electrically driven pump unit, telemetry and logging cable with socket contact pair cable connector installed on the end of the pipe, which is then lowered into the borehole and movement oriented sockets on the fixed pin contact pair cable connector under the action of the efforts of the contact pressing carry out joint contact pair cable connector and the electrical connection of geophysical cables from the unit telemetry ground station control and measurement system modules in the well.

6. The method according to claim 5, characterized in that, before descending into the well electrically driven pump unit, telemetry and logging cable, the cavity of the collector pin and socket cable connector pre-filled liquid sealing filler and pre-close the aperture, the latter at the junction of the contact pair is broken what tirem cable connector and the movement of the pin displaces the liquid sealing filling of cavities trap pin and socket, sealing cable connector.



 

Same patents:

FIELD: mining.

SUBSTANCE: method includes lowering of a downhole tool on a logging cable into a well shaft, fixation of the downhole tool in the well shaft at the first place of works in the well shaft, performing of an operation of sampling or taking specimens of beds of fluid medium using a sampling tool connected with the first section. At the same time the operation of sampling or taking specimens is performed at the second place of works in the well shaft, when the downhole tool remains fixed in the well shaft at the first place of works, and at the same time the second place of works is spaced with the first place of works in direction parallel to the longitudinal axis of the downhole tool. The first section of the downhole tool and the second section of the downhole tool are moved so that the first section of the downhole element is moved from the second place of works in direction parallel to the longitudinal axis of the downhole tool, and the second section of the downhole tool is moved to the second place of works in a direction parallel to the longitudinal axis of the downhole tool. Then the operation of core sampling is performed at the second place of works using a core sampling tool connected with the second section.

EFFECT: invention provides for more accurate performance of testing operations, operations of sampling or taking specimens, completion operations.

16 cl, 19 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to drilling horizontal wells for which measurements should be made. Proposed device comprises connectors for connection at well bottom with diagraphy cable arranged inside drill rod carrying said support device, means for communication drill inside with support device outside part. Note here that said communication means are arranged between said probe and said communication means. Proposed device comprises also swinging shutter arranged between communication means and connectors to allow fluid circulation from inside to outside and preventing it circulation from outside to inside of said support device.

EFFECT: higher safety in horizontal diagraphy.

6 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: device includes hold-down unit having inlet fluid medium opening, which is connected in detachable manner to outlet fluid medium opening of well tubular element, outlet fluid medium opening, which is connected in detachable manner to inlet fluid medium opening of well tubular element, and channel passing between inlet fluid medium opening of hold-down unit and outlet fluid medium opening of hold-down unit and including the inward passing projection intended for heat transfer from the heat-generating element to fluid medium flowing through the channel.

EFFECT: increasing heat dissipation efficiency in well tool.

13 cl, 10 dwg

FIELD: oil and gas industry.

SUBSTANCE: lubricating system for wells consists of lubricator, lubricator substructure and rotation mechanism. Lubricator is designed as tubular housing with guide rollers, the housing base is provided with sealing element. On lubricator substructure there is mounting block fixed with rotation mechanism installed on it being a driving shaft. Attachment facilities for middle part of lubricator tubular housing are installed on the shaft, as well as segment of worm wheel connected to worm screw, which in its turn is connected to device providing rotation of worm screw. Worm screw is designed with narrow angle of spiral line elevation providing mode of worm-and-worm pair self-retention, and rotation axis of worm wheel segment is located perpendicular to rotation axis of worm screw and at a distance from axis of lubricator tubular housing exceeding 0.5 d, but not more than 1.5 d, where d is outer diameter of sealing element of lubricator tubular housing base.

EFFECT: simplifying the structure and its assembly, simplifying operation of lubricating system, improving its reliability.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to oil and gas producing industry, namely to the method of equipment delivery to the specified interval of multi-hole well and device for its implementation. In the course of method implementation the deflectors oriented from the well mouth are installed at the column of tubing, the equipment is lowered to the specified interval of the well and is delivered from column of tubing to the side hole in condition of closed access to the tubing interval located below or the equipment is lowered to the tubing column interval located below in condition of closed access to the side hole. The deflector installed at tubing is used as device. Deflector consists of hollow rotating housing equipped with lateral window and guiding element that provides coiled tubing passing to the side hole of the well or tubing interval located below.

EFFECT: due to the elimination of necessity to draw tubing column in advance the treatment and geophysical researches performance in multi-branch wells is simplified.

4 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: automatic coupling unit is equipped with the cylinder connected to hook sleeve, and a spring. Guide and mating parts are provided in the cylinder with possibility of engagement with the hook sleeve. The latter is installed on the contact housing fixed in the housing representing a cylindrical part so that sleeve is pressed to the housing by means of a spring. At that, fluoroplastic insulating tube and a pin is installed in the contact housing. Pin is connected to cable clamp connected to the first cable head by means of logging information cable. Measuring instrument is suspended on the cable which is connected to non-return valve. Cylinder is fixed on the second cable head.

EFFECT: enlarging functional capabilities owing to performing the investigation without stopping the well by automatic coupling unit; improving its reliability.

1 dwg

FIELD: oil and gas production.

SUBSTANCE: electronic module of bottomhole telemetric system consists of switchboard, of protective jacket, and of electronics chassis with converters unit mounted on vibro-isolators on both sides and fixed with pins from turning. Between the said chassis there is introduced an additional vibro-insulator. The said vibro-insulators are arranged on set bushes fixed with screws from turning and they are equipped with an up-thrust nuts. Internal surface of the protective jacket in upper and lower sections is made correspondingly with upper and lower slots oriented in one plane. A lower section of the protective jacket is equipped with an end in form of a bush with a screw set in the lower slot and with an element for extracting the protective jacket of the electronic module from the case of the bottomhole telemetric system. An upper part of the protective jacket is connected to the switchboard by means of successively set the nut and the bush with a pin installed in the upper slot. Additionally the chassis with the converters unit is furnished with additional vibro-insulators.

EFFECT: reduced detrimental effects of impact and vibration loads on electronic modules of downhole instrument.

4 dwg

FIELD: mining.

SUBSTANCE: device comprises geophysical cable, facility of transportation, connected to hydraulic rupture facility. According to invention, transportation facility is arranged in the form of hydraulic propeller connected by common shaft to drive and high-voltage generator, installed inside closed sealed vessel. This vessel is in its turn installed inside jacket with formation of circular gap. At the same time high-voltage generator is arranged with piezoelectric plates.

EFFECT: improved efficiency of hydraulic rupture by increasing efficiency of perforation facility delivery, intended for hydraulic rupture of beds into horizontal or inclined well.

13 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry and can be applied in dual operation of two beds in the same well. The unit comprises a power drive, a driving element, a packer and fluid lifting lines with parallel tubing string columns lowered in the well. The unit accommodates a parallel anchor with apertures for cables and tubing string columns, eccentric guides fixed by centering clips on auxiliary branch built in the long tubing string column, bottomhole apparatuses connected to cables and arranged above and below the packer. Each guide has apertures for the cables and an aperture with the top deepened inside in the form of a funnel for the short tubing string column.

EFFECT: invention ensures coupling of the short tubing string column with the parallel anchor and prevents damage of cables.

3 dwg

FIELD: oil and gas production.

SUBSTANCE: downhole equipment centraliser comprising a hollow rod with a socket end, a coupling, a cylinder, a piston pusher and rams partially radially movable forward when travelling along the tapered case. Besides the coupling is provided from beneath; from the top, the hollow rod is equipped with a landing seat, and the cylinder wherein all the movable elements are provided, comprises ram windows and seats between the coupling and the landing seat while being designed to rotate and join a centre tube of the hollow rod; the tapered case is rigidly connected with the piston pusher spring-assisted from beneath to travel longitudinally downwards and rotate about the hollow rod.

EFFECT: rigid and reliable centering of the downhole equipment in the required interval.

3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: disclosed is a method of transmitting measurement data by a cable-free telemetric system when drilling wells, involving encoding and transmitting information via a phase-shift keyed signal in form of a sequence of pulses, synchronising the signal and receiving the encoded information by a land receiver. One-time (initial) phase synchronisation of precision quartz-crystal oscillators of the transmitter of the bottom telemetric system and the land receiver is carried out by accumulating data on the transitioning of the signal through zero and one-time synchronisation of signals using a priori information on the bottom telemetric system at the current moment in time is also carried out. Prolonged stability of synchronisation of said oscillators is ensured by adjusting the phase of the quartz-crystal oscillator of the land receiver relative to the statistically determined transitioning through zero of the signal of the transmitter of the bottom telemetric system.

EFFECT: higher capacity of the communication channel and high noise-immunity thereof.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of a well accompanied by mud logging. At that in drilling process total content of hydrocarbon gas and luminescent properties of capillary extraction are determined. Moreover if total content of hydrocarbon gas is 2% and more and luminescent properties of capillary extraction are equal to 2 points and more the penetrated stratum is subject to further surveys. Packed-hole assembly is pulled out from the well, flow string with packer is lowered and the packer is located over the penetrated stratum; circulation of flush liquid is arranged, tubular annulus is filled with a tracing fluid, the packer is inserted into the borehole over the penetrated stratum. The flow string is swabbed with the rate of 10-17 m/min till intake of reservoir fluid is obtained. In swabbing process samples of liquid are taken to check oil presence. When oil is received from the stratum its daily production rate is determined by build-up method from the maximum reduction value for the level, but not less than 3 MPa of bottomhole pressure. Conclusion on productivity of the penetrated stratum is made provided that oil flow rate is 2 m3/day and more. Drilling of the well is continued.

EFFECT: increase of reliability and operational efficiency, determination of productivity in the process of well drilling.

FIELD: oil and gas industry.

SUBSTANCE: method involves three stages: acquisition and processing of borehole data, sending and transfer of signals, and acquisition of data on the surface. Into a drilling string there can be installed a relay system for recovery of signals. By means of a connecting element between a piezoelectric converter and a drilling pipe and by means of transfer ability of wave of stresses of the drilling string, by detection there automatically chosen is an optimum frequency and used for transfer of signals to the surface through the drilling string. In order to transfer signals, detection of a chaos generator is used, as well as in order to solve a Duffing equation, Runge-Kutta method of the fourth order is used to determine availability of a signal as per the value of the system period, and then, a useful signal is picked up. The system comprises a system for the well data receiving and sending, and a system for data acquisition on surface, as well as it can include a relay system. Signals can be transferred in two directions.

EFFECT: invention can be widely used at drilling using liquid or gaseous fluids; its advantage comprises high data transfer and detection rate.

8 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves thermometry and gamma logging of a well with recording of a background value of natural radioactivity of rocks and background distribution of temperature along the well shaft, a disturbing action, repeated telemetry and gamma logging with recording of values and data of a flow meter, and comparison of data. Thermometry and gamma logging is performed via inter-tube space of the well; the disturbing action is taken by reduction of liquid level in the well by pumping of inert gas to the inter-tube space at the pressure not exceeding maximum allowable pressure on a production string, with displacement of liquid to a tubing string through valves of a rod well pump and then to a discharge line by excess pressure bleeding-off to atmospheric pressure. At repeated performance of thermometry and gamma logging, a geophysical instrument is lifted by 50-100 m higher than the roof of upper perforation interval at the speed of 180-200 m/h with simultaneous recording of a liquid flow rate with a borehole thermoconductive flow meter, intensity of gamma emission of rocks and temperature; after the above instrument passes the distance of 50-100 m above the roof of upper perforation interval, recording is performed only with a thermometer at the speed of 400-600 m/h; when temperature anomalies are found out, which differ from temperature values at test recording via the well shaft, the data of intervals is specified and detailed by performing complex recording using the borehole thermoconductive flow meter and a mechanical flow meter at the speed of 180-200 m/h with measurement of 30-40 points at the investigated interval; after recording via the whole well shaft is completed, repeated lowering of the instrument, repeated temperature recording is performed; complex recording is performed using the borehole thermoconductive flow meter and the mechanical flow meter with measurement of 30-40 points; after the borehole working face is reached, the geophysical instrument is lifted, during which the same records are taken with a thermometer, the borehole thermoconductive flow meter and the mechanical flow meter as at the repeated lowering operation.

EFFECT: surveying of a production well with a lowered non-operating bottom-hole pump.

FIELD: oil and gas industry.

SUBSTANCE: bottomhole drilling fluid flow rate sensor includes a housing, a diaphragm and connecting tubes. At that, the device located in lower part of a drill pipe immediately above a bit and rigidly fixed on the pipe walls has a mechanical oscillating system made in the form of a hollow counterweight with a membrane, which is torsionally suspended on two capillaries, and with a constant magnet fixed on it, a system of actuation and pickup of oscillations, which interacts with a constant magnet field, and two separating vessels interconnected with the capillaries. Fluorocarbon liquid "Б"-1 serves as separating liquid for space under the membrane of the counterweight, and dibutyl phthalate - for space above the membrane.

EFFECT: improving reliability of measurement of the drilling fluid flow rate immediately during well drilling process.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: load is measured in the well location during the well operation; at that, load measurement involves load measurement by means of a subassembly attached to layout of the drilling string bottom. Load data is transferred to surface in real time mode by means of telemetry; load data is evaluated with a control device located on the surface; and corrective action in the well, which is based on the load data, is taken.

EFFECT: improving reliability and quality of analysis of measured load.

18 cl, 10 dwg

FIELD: oil and gas industry.

SUBSTANCE: stimulation method of formation fluid influx from the well consists in lowering to the well of a tubing string. Counter pressure on the productive formation is decreased owing to replacing the liquid column with liquid-gas mixture (LGM) at observance of the required value of depression on the productive formation. Before the tubing string is lowered, its lower end is equipped with a remote subsurface pressure gauge and a filter. The tubing string is lowered to the well so that the filter is located opposite the formation perforation interval; after that, treatment of the bottom-hole zone of the formation is performed using a chemical method with process exposure for reaction. Then, the tubing string is lowered further so that the filter is located below the formation bottom, and into the inter-string space there lowered is a string of flexible tubes (FT) 100 m below the liquid level in the well. The liquid column is replaced in the inter-string space of the well with LGW and lowering of the FT string is continued. When lower end of the filter of the tubing string is reached, lowering of the FT string is stopped; then, stimulation of the formation fluid influx is started by gradual reduction of density of pumped LGM till the required depression on the productive formation, which is controlled as per readings of the remote subsurface pressure gauge, is achieved. After completion of stimulation of the influx from the well there removed is FT string from the inter-string space of the well, and operating equipment is lowered to the well and the well is put into operation.

EFFECT: improving efficiency and quality of stimulation of formation fluid influx from productive formation.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: system includes flexible tubing having a fibre optic conductor and a section with instruments. At that, fibre optic conductor is located in a cavity flush with outer surface of the section of flexible tubing equipped with instruments. Besides, the above cavity is curved. The system also includes a device for fixing the fibre optic conductor on the surface of the wall of flexible tubing, an adapter through which the above conductor passes to an internal fibre optic conductor, and a connecting coupling. The latter has the possibility of data transferring by means of contactless telemetry.

EFFECT: improving measurement efficiency of one or more parameters in the well along a certain zone of the well.

21 cl, 9 dwg

FIELD: oil and gas industry.

SUBSTANCE: method for determining the flow rate and the density of formation fluid of oil formations consists in shaping of signals when a sensitive element passes through the specified levels in the well. Measurement of time intervals between signals, with further calculation of the flow rate of the formation in relation to distance between specified levels to time interval between the appropriate pulses. Measurement of movement speed of several sensitive elements is performed. Flow rate of each next above-lying oil formation or layer is determined as difference between previous and current measurements. Density of formation fluid is determined as integral density value of the last sensitive element that floated up to the surface and that one that did not float up to the surface.

EFFECT: improving measurement reliability of flow rate and density of formation fluid.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: when surveying a gas well, its head is equipped with a separator, a gas flow rate measuring device and a flow line for flame. Gas pressure and temperature is measured on the installed device and the well flow rate is determined based on performed measurements and structural characteristics of the device. In addition, the well head is equipped with an electric power plant generating electric power at combustion of produced gas. When surveying high-flow-rate wells, the electric power plant is installed between the gas flow rate measuring device and the flame line. When surveying low-flow-rate wells, the electric power plant is installed before the gas flow rate measuring device.

EFFECT: use of produced gas during survey of gas wells for generation of electric power.

Downhole tractor // 2487230

FIELD: oil and gas industry.

SUBSTANCE: tractor assembly consists of cylindrical body with electric engine installed in it, pivoted wedging supports and at least one section with driving machine made in the form of wheels installed in the body; wheels have with curvature radius equal to radius of the examined well. At that tractor assembly is equipped additionally with pump and drive from electric engine, hydraulic motor with chain drive of wheels and actuator of wedging supports. An extra electric engine can be installed for actuator of wedging supports.

EFFECT: increased draught power of the device.

2 cl, 1 dwg

Up!