Way to stimulate the flow of hydrocarbons in the well

 

The invention relates to the oil industry. The technical result of the invention is to increase the flow of hydrocarbons in the well. For this purpose, the reservoir is affected by gidroimpulsov associated with the computer device effects in a tightly closed mouth well preventer. As the exposure device using pneumatic generator gidroimpulsov, which simultaneously performs the function of pump fluid into the well. As the device energy transfer in the reservoir that is placed in a well bore zone on the cable and connect the information outputs from the computer, use a resonator reflector gidroimpulsov with their direction in the reservoir up to 1600 strokes per minute. The reservoir is treated successively layer by layer starting from the bottom layer of the reservoir, increasing the flow rate of 2-6 times. At the same time as the working gas using compressed air with a pressure of 6-8 atmospheres as 8-10 m3/min. using a computer, monitor changes of hydrodynamic parameters in a well bore zone, analyze the process PP and control work is finding relates to the oil and gas industry, and in particular to methods of developing and increasing the degree of extraction of oil and gas from the earth's interior.

Known way to stimulate the flow of hydrocarbons into the well, through effects on the producing formation by gidroimpulsov, according to which on the surface of the well set the exposure device and associated control computer, in a well bore zone on the cable connection place the device energy transfer in the reservoir and the sensor hydrodynamic parameters, the information outputs of which are connected through a communication cable to a host computer, which control the change of hydrodynamic parameters in a well bore zone, analyze the process of the productive formation and control the operation of the device effects (see the description of the invention to the patent of Russian Federation №2191896, IPC E 21 In 43/25, publication 27.10.2002,)

The disadvantage of this method is the lack of flow of hydrocarbons in the well.

Objective of the claimed invention is to increase the flow of hydrocarbons in the well.

The invention consists in that way stimulate the flow of hydrocarbons into the well by affecting the reservoir hydroimpulse computer, in the bottom-hole zone of the well on a cable host device transmit energy in the reservoir and the sensor hydrodynamic parameters, the information outputs of which are connected through a communication cable to a host computer, which control the change of hydrodynamic parameters in a well bore zone, analyze the process of the productive formation and control the operation of the exposure device, the exposure gidroimpulsov carried out in a tightly closed mouth well preventer, as the exposure device using pneumatic generator gidroimpulsov, which simultaneously performs the function of pump fluid into the well until it is completely filled, as the device energy transfer into the reservoir using a resonator reflector gidroimpulsov with their direction in the reservoir up to 1600 strokes per minute,the reservoir is treated successively layer by layer and start processing with the bottom layer of the reservoir, the working gas using compressed air with a pressure of 6-8 atmospheres, 8-10 m3/min

This allows you to increase the flow of hydrocarbons in the well.

imago equipment. On the surface of the well 1 is installed in the exposure device, made in the form of a pneumatic generator 2 gidroimpulsy air module 3 preparation of the working gas 4 and the host computer 5. At the wellhead 1 is installed preventer 6. With the host computer 5 is connected to the communication cable 7, the second end of which is in a well bore zone posted: unit 8 energy transfer through the perforations 9 into the reservoir 10, in the form of resonator reflector 11 gidroimpulsov, and the sensor 12 of the hydrodynamic parameters using the communication line 13. There is a line of operating fluid supply 14.

The method is as follows.

Working gas 4, mainly compressed air 1, with a pressure of 6-8 atmospheres as 8-10 m3rpm served in the air module 3 preparation of the working gas, where it is cleaned, dried and set its consumption of 8-10 m3/min, and then served in the generator 2 gidroimpulsov. On line 14 are flow of the operating fluid, for example an acid solution into the well with 1 generator 2 gidroimpulsov to its full completion. Next, the generator 2 create gidroimpulsy which the working fluid in the borehole 1 is transmitted through the resonator reflector 11 in the reservoir is formed, and registered in the host computer 5. According to a special program these data are analyzed by the computer 5, and issued commands to control the operation of the generator 2 gidroimpulsov and preventer 6.

An example of the method.

As a working gas 4 use compressed air with a pressure of 7 atmospheres of 9 m3/min. as a working fluid using the acid solution. The sequence of operations of the method in the example is the same as described above.

The set of essential features specified in the claims, can improve the flow of hydrocarbons in the well.

Claims

Way to stimulate the flow of hydrocarbons into the well, through effects on the producing formation by gidroimpulsov, according to which on the surface of the well set the exposure device and associated control computer, in a well bore zone on the cable host device transmit energy in the reservoir and the sensor hydrodynamic parameters, the information outputs of which are connected through a communication cable to a host computer, which control the change of hydrodynamic parameters in a well bore zone, analisia effect gidroimpulsov carried out in a tightly closed mouth of the well, as the exposure device using pneumatic generator gidroimpulsov, which simultaneously performs the function of pump fluid into the well until it is completely filled in, as a device for energy transfer in the reservoir using a resonator reflector gidroimpulsov with their direction in the reservoir up to 1600 strokes per minute, the reservoir is treated successively layer by layer and start processing with the bottom layer of the reservoir, the working gas using compressed air with a pressure of 6-8 bar in 8-10 m3/min



 

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FIELD: oil and gas extractive industry.

SUBSTANCE: device has pipe-like body with detachable upper and lower sleeves. Concentrically to body, with possible rotation relatively to it, a cover is mounted with blades with scrapers placed spirally on its surface. To lower sleeve a reactive end piece is connected with slit apertures. End piece hollow is filled with granulated material engaging in exothermal reaction with acid. Lower portion of end piece is provided with check valve. Upper sleeve is provided with check valve having locking element in form of sphere with shelf and centering elements, to be dropped from well mouth. Base of saddle of check valve is made in form of disc having diameter equal to diameter of body. Pass aperture of saddle in lower portion is overlapped with easily destructible and easily removed element. Length of sphere shelf is greater than height of pass aperture of saddle of check valve of upper sleeve.

EFFECT: higher reliability, higher efficiency, broader functional capabilities of device.

3 cl, 4 dwg, 1 tbl

FIELD: oil and gas production.

SUBSTANCE: groups of high intake- and low intake-capacity injecting wells are chosen in a single hydrodynamic system and, for each well, oil reservoir properties and permissible degree of pollution of fluid received by high intake-capacity wells are determined. When fluid from low-permeable oil reservoir flows off through high intake-capacity wells, this fluid is cleaned to permissible degree of pollution.

EFFECT: reduced losses in intake capacity of formations and increased time between treatments of wells.

1 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes forming of gas pillow by forcing gas into inter-tubular space. Further pushing liquid is forced therein with forcing away of liquid from inter-tubular space along tubing column into tank or store, pressure is dropped from inter-tubular space down to atmospheric and hydro-impact is used to effect well face by rotating liquid flow from tubing column. Pillow is formed by plant for forcing pushing liquid and gases. As gas, mixture of air and exhaust gases is used in relation no greater than 2:3. pillow pressure provides for prevention of gas from getting into tubing column. Volume of pushing liquid is determined from formula: Vpl=0.785.(d

21
-d22
).(HT-Hgp-Hi-t).10-6, where d1 - inner diameter of casing column, mm; d2 - outer diameter of tubing pipes, mm; HT - depth of lowering tubing column in well, m; Hgp - height of gas pillow in inter-tubular space, m; Hgp=K·Pgp; K - hydrostatic coefficient of resistance to pushing of liquid and gas (K=100 m/MPa), m/MPa; Pgp - end pressure of gas pillow, MPa; Hi-t - inter-tubular space height.

EFFECT: higher safety, higher efficiency.

3 cl, 2 dwg, 2 ex, 1 tbl

FIELD: oil industry.

SUBSTANCE: device has pump, placed on well mouth equipment, tubing string, passing downwards in casing string of well. Node of hollow cylinders is connected to lower portion of tubing string. A couple of pistons is placed inside cylinders node and connected to pump via pump bars and gland rod. For compression of liquid within cylinders node, pump is enabled. Compressed liquid is outputted into casing column, and strike wave is formed as a result. Cylinders node includes upper cylinder, lower cylinder. Transfer cylinder is placed below upper and above lower cylinders. Cylinder with compression chamber is placed between transfer cylinder and upper cylinder. Lower cylinder is made with possible placement of lower piston, and upper cylinder is made with possible placement of upper piston. Lower piston has larger diameter, than upper piston. Displacement of piston affects volume of compression chamber, decreasing it. Liquid in the chamber is compressed. During downward movement of piston liquid is lowered into well. Seismic data from wells at remote locations are gathered and processed.

EFFECT: higher efficiency.

4 cl, 9 dwg

FIELD: oil industry.

SUBSTANCE: device has receiving chamber with solid-fuel charges and igniter, combustible plug and air chamber with atmospheric pressure. Receiving chamber is perforated along whole length by apertures for outlet of combustion products. Charge adjacent to upper end of receiving chamber burns from its end. It is made of heat-resistant low-gas slow-burning compound with high temperature of combustion products and high caloricity, with low dependence of burning speed from pressure and it is protected from burning at side surface by compound preventing burning thereon, but burning together with charge. Charge, adjacent to plug, is of channel construction, quick-combustible, and it is made of heat-resistant gas-generating compound. Igniter is mounted in upper end of charge, adjacent to upper end of receiving chamber. Air chamber with atmospheric pressure is placed below receiving chamber.

EFFECT: higher efficiency.

2 cl, 1 dwg

FIELD: oil industry.

SUBSTANCE: device for complex treatment of face-adjacent well zone has thermal gas-generator charged with fuel with electric igniter and pipe-shaped container with acid solution, made with perforation apertures, both mounted on rope-cable. Acid solution is positioned in thermal-melting hermetic tank inside the container. Device is additionally provided with depression chamber and impact-wave effect chamber, containing remotely controlled fast-action locks, with two packers, mounted at ends of pipe-shaped container. Packers are opened under pressure from gases from gas generator. After operation of gas generator is finished, packers release pipe-shaped container. Depression chamber, impact-wave effect chamber and gas generator are jointly connected.

EFFECT: higher efficiency.

2 cl, 1 dwg

FIELD: oil industry.

SUBSTANCE: method includes determining dominating frequency of productive bed by performing prior vibration-seismic action using surface oscillations source at different frequencies and analysis of seismic graphs from seismic receivers in product wells. Vibration-seismic effect on watered portion of productive bed of oil deposit is performed by a group of surface oscillations sources, operating at dominating frequency of productive bed. Bed fluid is extracted via product wells. After vibration-seismic effect on watered portion of productive bed of oil deposit by a group of surface oscillations sources, operating at domination frequency of productive bed, concurrent vibration-seismic effect is performed using two sub-groups of said group of surface oscillation sources. Each sub-group of group operates at determined from mathematical dependence. Average frequency of surface oscillations sources of whole group is equal to dominating frequency of productive bed. Difference in frequencies, on which each sub-group operates, is determined in accordance to linear size of watered portion of productive bed of oil deposit and is satisfactory to mathematical dependence. Concurrent vibration-seismic effect by two sub-groups of said group of surface oscillations sources is performed with forming of wave having length exceeding length of wave with dominating frequency.

EFFECT: higher oil yield.

2 ex

FIELD: mining industry.

SUBSTANCE: processing periods include forming of depression pressure change between well-adjacent bed zone and well hollow. Cleaning of well-adjacent bed zone is performed by prior feeding of fluid into well, forming of periodic pressure pulses in well-adjacent bed zone in form of fading standing wave, moving along the well, and decreasing pressure during fluid movement along well from well-adjacent bed zone to day surface for extraction of clogging. Plant for washing wells is used, which is connected to behind-pipe space of well and to tubing pipe. Behind-pipe space of well is isolated by packer along lower limit of perforation range. Perforation range is filled with sedimentation, formed from destroyed rock, and accumulated above packer as a result of gradual and even cleaning of well-adjacent bed zone along whole length of perforation range. Packer is disabled and well is washed clean, without raising tubing pipes column.

EFFECT: higher efficiency.

1 dwg, 1 ex

FIELD: oil industry.

SUBSTANCE: method includes pulse treatment of productive bed by energy of atmospheric electricity by using lightning discharge. Prior to initialization of storm discharge voltage of electric field above well is measured using measuring block. Initiation of storm discharge is performed when reaching value of strength of electric field above well no less than 30 kV/m and enough for forming leading channel of lightning. To exclude corona as receiver of electric energy metallic mast is used, on upper end of which metallic fragment of spherical form is positioned having smooth external surface, or smooth metallic wire is used with its possible raising towards storm cloud. Output of receiver is connected to casing column of well. Powerful electric discharge along casing column and through its perforated portion gets into area of productive bed and disperses there.

EFFECT: simplified method, simplified construction of device, higher product yield.

2 cl, 1 dwg

FIELD: oil production, particularly to stimulate oil extraction under difficult field development conditions, particularly in the case of carbonate formation treatment.

SUBSTANCE: method involves forming new cracks and/or stimulating existent ones in production bed by serially well flushing and performing periodical depressive and repressive actions along with flushing thereof at circulation or outflow stages; isolating interval to be treated with packer; cyclic changing pressure with following injecting working liquid, for instance oil and/or at least one plug of chemical agent, for example of hydrochloric acid. All above operations are performed along with oscillating action of radiator installed in front of production bed interval to be treated.

EFFECT: increased intensity of production bed treatment and extended operational functionality.

23 cl, 2 ex

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