Technological complex for the study of horizontal and inclined wells, removable weighting for geophysical complex (options) and the method of study of horizontal and inclined wells

 

The invention relates to the field of geophysical and hydrodynamic studies. Technological complex for the study of horizontal and inclined wells contains geophysical cable-based, propulsion and integrated logging device. The propeller is placed on the cable-based, made of two sections: the top, on which is mounted a removable filler and the bottom that has a constant weight and lightweight part. On the lower section of the cable-fundamentals of stacked layers in the following sequence: polymer substrate, a permanent filler, reinforcing Powel wires, the first alignment polymer shell, then the second outer polymer shell. Constant weighting is made of metal, such as lead, tubes or coil of metal, such as lead, tape, or alternating steel coils and lead wires, arranged in one or more layers, when the estimated fixed length constant weighting. Removable weighting in the first embodiment is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape with a Central channel along the length, width, required for the size of the ons housing has a concave spherical shape, and on the other, a convex spherical shape with the nest under lock fastening fixtures. Removable weighting according to the second variant is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape with a Central groove needed to accommodate the cable, the ends have the tabs-the tabs length equal to half the length of the Central groove, and located asymmetrically relative to the Central groove. The method of study of horizontal and inclined wells includes delivery of the devices in the period of geophysical research-cable-basis with the propeller and the subsequent registration of geophysical parameters. Optimal weight and linear correlation of the upper and lower sections of the propulsion pre-calculated for each profile of the wellbore based on the data survey, downhole conditions and weight geophysical instruments, and determine the weight of the additional removable filler mounted on the upper section of the thruster. Effect: increase reliability of the obtained research results. 4 C. and 1 C.p. f-crystals. 17 ill.

Subregional borehole geophysical instruments and other devices.

A device for transportation of geophysical instruments in deep directional wells, including the rod, the carriage slide and rasklinivanie supports mounted on the rod can move along it and connected with one end of the traction rope, a spring mounted on the rod between the emphasis on it and the carriage, additional spring and bushing, and the limiters are installed in the head part of the piston rod and the carriage-side location of the spring, thus the additional spring is placed on the slide, which is connected with a traction cable sleeve is placed on the supports and levers pivoted on the slide, and the drive drum is equipped with a clutch connected with the travel stop of the carriage, and placed inside the rod (see and.with. The USSR №1105625, IPC G 01 V 3/18, bull. No. 12, 1984).

The disadvantage of this device is that it requires additional mechanisms, systems of power and control, which increases the likelihood of failures and accidents during transportation. In addition, the speed of moving in the horizontal section of the well is small, which makes it impossible to transport the instrument to the required distance for a limited period of time.

The closest I devices the prototype is a technological complex delivery devices at the bottom of the HS with “floating” plastic tubing (“Horizontal-4”). Moving the logging tool in a horizontal wellbore is carried out using a thruster mounted on wireline.

Technological operations complex of the following:

- lowered into the borehole geophysical container Assembly made from transparent to geophysical methods of research material, special plastic tubes, and propulsion; propulsion using weighted tubes;

next inside the tubes down geophysical instrument on wireline and fix the thruster using a cable clamp;

- assembled geophysical tool is lowered on a cable into the borehole;

- the impact of the efforts developed by the propeller tube slide on an inclined plane, moving the container with the measuring apparatus on the horizontal trunk to the bottom of the borehole, and provide registration of the geophysical parameters (see A. A. Molchanov and other Geophysical studies of horizontal oil and gas wells. Uch. manual. -S. Petersburg: international Academy of ecology, man and nature, 2001, with the extractive wells, and horizontal boreholes of small diameter, the drilling of the previously operated wells. As shown, the disadvantages of the complex should also include the destruction of the material of the pipes in the connection that leads to accidents in the wells, and the influence of the plastic container on the measurement results.

The objective of the invention is the development of a technological complex and how it is used, free from the disadvantages of the prototype for the study of each well using a pre-calculated structures delivery of downhole tools to the faces.

The problem is solved using the characteristics listed in the 1st paragraph of the claims, in common with the prototype, such as technological complex for the study of horizontal and inclined wells containing geophysical cable-based, propulsion and integrated logging device, and distinctive essential features such as propulsion, placed on the load-carrying logging cable-based, made of two sections, the top, on which is mounted a removable filler and the bottom that has a constant weight and lightweight part, with n weighting, reinforcing Powel wires, the first alignment polymer shell, then the second outer polymer shell. This allows the manufacture of load-carrying geophysical cable located on the propulsion, consisting of a constant weighting and lightweight parts for a particular consumer, which is a priori specifies the size of the winch used wireline truck and planned construction subject to the exploration wells. Preliminary calculation allows to choose the optimal ratio of length to a constant weight and lightweight parts, using the computer program, ed. mon. No. 2002611579 from 12.09.2002, “the Program of choice of delivery methods of geophysical instruments to the bottom of horizontal wells”(RACCOON-2002), the owner JSC Permneftegeofizika, the authors Savic A. D., Shumilov A. C., Kilayko E. C., Tashkinov And. In (hereinafter the software).

The design of the permanent weighting reflected in paragraph 2 of the claims, namely constant weighting is made of metal, such as lead, tubes or coil of metal, such as lead, tape, or alternating steel coils and lead wires, arranged in one or more layers, if defined, RLA reflected in paragraphs 3 and 4 of the claims. In the first embodiment removable weighting for geophysical complex is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape with a Central channel along the length, width needed to accommodate the cable, transverse groove and a mortgage detail for the groove, and the end face on one side of the housing has a concave spherical shape, and on the other, a convex spherical shape with the nest under lock fastening fixtures.

The second option removable weighting for geophysical complex is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape with a Central groove needed to accommodate the cable, the ends have the tabs-the tabs length equal to half the length of the Central groove, and located asymmetrically relative to the Central groove.

The goal in the way of investigations pursuant to paragraph 6 of the formula of the invention is achieved by the features common with the prototype, such as a method of study of horizontal and inclined wells, including delivery devices in the period of geophysical research-cable-basis with the propeller and the subsequent registration of geophysical pair is on and the lower parts of the propulsion pre-calculated for each profile of the wellbore based on the data survey, downhole conditions and weight geophysical instruments, and determine the weight of the additional removable filler mounted on the upper section of the mover.

The technical result from the use of this invention is elimination of emergency situations in the study wells; increased reliability; the ability to research each well, using a pre-calculated structures delivery of downhole tools to the faces; providing continuous information support of drilling horizontal due to the registration of geological settings.

The above distinguishing features of each separately and all together aimed at solving the problem and are significant. The use of the proposed combination of distinctive features (as for a method and devices known in the prior art was not found, therefore the proposed solution meets the patentability criteria of “novelty”.

One set of new essential features with common, well-known (as for a method and devices) provides a solution to this problem is obvious for the spice of patentability “inventive step”.

The technical Association of the three solutions in one application due to the fact that they can only be used in conjunction to solve the above technical problem.

The invention is illustrated by description of a specific but not limiting example of implementation and the accompanying drawings, in which Fig.1 shows a General view of the complex of Fig.2 - section a-a of Fig.1; Fig.3 - section b-B, a constant weighting of the lead tube; Fig.4 - section b-B, a constant weighting in the form of a coil of lead strip; Fig.5 - section b-B, a constant weighting of alternating windings of lead and steel wires of different profile of Fig.6 - section b-B, a constant weighting of steel wire of different sections, for example rectangular or circular, and Fig.7 - removable weighting for the 1st variant of Fig.8 - cut weighting a-a of Fig.7; Fig.9 - weight type Fig.7 end; Fig.10 - embedded plate removable filler, side view; Fig.11 - embedded plate removable filler top view of Fig.12 is a cross section along a - a of Fig.11 weighting of Fig.13 is a General view of the removable filler on the 2nd variant of Fig.14 is a side view of the clamp attachment for weighting for the 1st variant of Fig.15 - end view of the retainer through the hole.

The complex uses a removable weighting structure, see Fig.7-12 (option 1) or Fig.13 (option 2).

Technological complex for the study of horizontal and inclined wells (Fig.1) contains a geophysical cable-basis 1, for example, stamps KG 7×0,75-75-150, mover 2 and integrated logging device 3. Mover 2, located on the cable of the base 1, made of two sections: the top 4 on which is mounted between the clamps 5 removable filler 6 and the bottom 7 that has a constant weighting 8 and the light portion 9, the lower portion 7 of the cable-basics 1 stacked layers in the following sequence: polymer substrate 10, a constant weighting 8, reinforcing Powel wires 11, the first alignment polymer shell 12, then the second outer polymer shell 13.

Constant weighting 8 (Fig.1) made of metal, such as lead, tube 14 (Fig.3), or the winding of a metal, such as lead, tape 15 (Fig.4), or alternating windings 16 (Fig.5) steel and lead wires laid in one 17 (Fig.6) or more layers. This determine by calculation the fixed length of the bottom portion 7 of the mover 2 (using the computer program, ed. mon. No. 2002611579).

Removable which each of them (Fig.7) has a body 18, for example, a cylindrical shape with a Central channel 19 length, width 20 (Fig.8) needed to accommodate the cable 1, the transverse groove 21 and the mortgage loan by item 22 (Fig.10) of the groove 21 and the Central channel 19. The end face 23 on one side of the housing 18 has a concave spherical shape, and on the other side is a convex spherical shape 24 with the socket 25 under the latch mounting fixtures 22.

Assembly removable ballast (option 1) between the tabs 5 on the cable-based 1 is performed in the following sequence: the cable is attached to the housing 18 and rotate 90° cable-the basis is laid in the groove 19, and then into the groove 21 is set to embedded plate 22 and is rotated 90° relative to the longitudinal axis of the housing 18; embedded plate 22 fills the cavity 19 and 21 of the housing 18. Then butt to the set weighting 6 face 24 is mounted next weighting in the same sequence. Mortgage item 22 is placed in the housing 18 and the protruding spherical shape 24 the end Of the part 22 is formed with the position 24 of a single surface. On the other hand, the position 23, the end parts 22 with the projection of the “To” form locking connection with the following detail of the cargo in position 25. A set of metal goods - removable utility (Fig.15) consists of two parts 26 and 27, which are connected by a connection in the form of a “dovetail” 28 and pins, drawed by a spring 29 (Fig.15). The fixing unit 5 on the cable base 1 has a spring 30 disposed between the bolt 31 and the finger 32 installed in the groove 33. For disassembly of the latch 5 is the plug for coupler 34 (Fig.16).

Removable weighting 6 (Fig.1) for the second variant (Fig.13) for geophysical complex made of metal goods, each of which has a body 35, for example, a cylindrical shape with a Central groove 36 along the length, the width of the groove 37, necessary to place the cable 1, the ends 38 have the tabs-the tabs 39 length equal to half the length of the Central groove 36, and located asymmetrically relative to the Central groove.

Assembly removable ballast (option 2) between the tabs 5 on the cable-based 1 is performed in the following sequence: the cable through the groove 36 is attached to the housing 35 of the weighting, then butt to him shall be the following weighting, the tabs-the tabs 39 which is fixed in the groove 36 on top of the cable-framework 1, and so on is mounted the required amount of cargo mass. Moreover, the end face 38 of the housing 35, joined to the retainer 5, no protrusion of the latch 39. So going Eigentum calculated using other Computer ed. mon. No. 2002611579.

A case study of horizontal and inclined wells using the above devices (Fig.17).

General process conditions.

The method of study of horizontal and inclined wells includes delivery devices 3 (Fig.1) in the interval of geophysical research cable 1 having a propulsion device 2, with the subsequent registration of geophysical parameters. Optimal weight and linear correlation of the upper 4 and lower 7 plots propulsion 2 pre-calculated (using the computer program, ed. mon. No. 2002611579) for each profile of the wellbore based on the data survey, downhole conditions and weight geophysical instruments, and determine the weight of the additional removable filler 6, mounted on the upper section 4 of the mover 2.

Geophysical surveys each particular horizontal wells requires estimates of effort required for delivery of downhole tools to the faces, which define the design of delivery vehicles, the length and weight of the removable filler and axial forces that occur when lifting. Preliminary calculations also necessary when designing environments is as horizontal wells (semi-horizontal, plot intensive set of curvature, a straight inclined and vertical), as well as all technical combinations of technical means of delivery of instruments to the faces.

An example of the calculation of the delivery device in the horizontal part of the well

Horizontal well depth 1870 m has a length of conditionally-horizontal section 280 meters Well (Fig.17) cased technical column (40) to a depth of 1570 m Radius of curvature (interval 1560-1610 m) is 75.4 m Profile of the wellbore is characterized by the following values of Zenith angles: 150 m - 1°; 500 m - 2°; 700 m - 3°; 1000 m - 5°; 1200 m - 11,5°; 1350 m - 15,5°; 1400 m - 32°; 1560 m - 50°; 1610 m - 88°; 1770 m - 96°; 1830 m - 88°; 1880 m - 94°. (R) To the bottom of the borehole filled with a mixture of oil-in-water (density 0.9 g/cm3), you must deliver the geophysical instrument (3) a mass of 20 kg and a diameter of 42 mm shipping is via technological complex, consisting of a cable-framework (1), constant weighting (8) and the light part (9), with the following weight characteristics, and the present density, respectively: 4,2 N and 4.8 g/cm3; 25,01 H and 3.1 g/cm3; 19, 22 the N and 2,39 g/cm3.

According to the calculation performed by the program “RACCOON-2002” for geophysical PR is oricheskogo complex must be 146 meters in constant weight (8), who will develop the force 1714,52 N. The force of friction on the horizontal section, created a lightweight part (9) with a length of 280 m and a geophysical instrument (3), will be 1207,97 N, including geophysical instrument 21,4 N. Calculate the mass of the weighting are according to the formula M=6×D2- 908 (kg/km), where D is the diameter, mm

If the design of the technological complex is just 100 m constant weighting (8) creation of equal effort possible by placing over it 25 m set of removable weights (6), consisting of lead loads with a diameter of 42 mm, with a weight per unit length 125 N and density 11,35 g/cm3.

Offer description confirms the industrial applicability of the technological complex for the study of horizontal and inclined wells, however, the above example should not be considered as limiting the scope of invention.

Claims

1. Technological complex for the study of horizontal and inclined wells containing geophysical cable-based, propulsion and integrated logging device, characterized in that the propeller is placed on the cable-based, made of two sections: the top, on which is mounted a removable utilitiy stacked layers in the following sequence: polymer substrate, constant weighting agent, a reinforcing Powel wires, the first alignment polymer shell, then the second outer polymer shell.

2. Complex p. 1, characterized in that the constant weighting is made of metal, such as lead tube or coil of metal, such as lead, tape, or alternating steel coils and lead wires, arranged in one or more layers, when the estimated fixed length constant weighting.

3. Removable weighting for geophysical complex, characterized in that it is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape, with a Central channel along the length, width needed to accommodate the cable, transverse groove and a mortgage detail for the groove, and the end face on one side of the housing has a concave spherical shape, and on the other, a convex spherical shape with the nest under lock fastening fixtures.

4. Removable weighting for geophysical complex, characterized in that it is made of a set of metal goods, each of which has a housing, for example, a cylindrical shape, with a Central notch required for ka is asymmetrically relative to the Central groove.

5. The method of study of horizontal and inclined wells, including delivery devices in the period of geophysical research-cable-based, with the propeller and the subsequent registration of geophysical parameters, characterized in that the optimal weight and linear correlation of the upper and lower sections of the propulsion pre-calculated for each profile of the wellbore based on the data survey, downhole conditions and weight geophysical instruments, and determine the weight of the additional removable filler mounted on the upper section of the mover.



 

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