CN102852500A - Draining gas recovery device for capillary pipe and operation method of draining gas recovery device - Google Patents
Draining gas recovery device for capillary pipe and operation method of draining gas recovery device Download PDFInfo
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- CN102852500A CN102852500A CN201210368247XA CN201210368247A CN102852500A CN 102852500 A CN102852500 A CN 102852500A CN 201210368247X A CN201210368247X A CN 201210368247XA CN 201210368247 A CN201210368247 A CN 201210368247A CN 102852500 A CN102852500 A CN 102852500A
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- capillary tube
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- spraying
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Abstract
The invention discloses a draining gas recovery device for a capillary pipe and an operation method of the draining gas recovery device and aims at solving the problem that a horizontal effusion section cannot be effectively reached in the traditional filling process of a foam discharging agent. The draining gas recovery device comprises a capillary pipe and a shaft passing device for feeding the capillary pipe underground and extracting the capillary pipe from the underground, wherein when the capillary pipe injects the foam discharging agent into a well fluid, the bottom end of the capillary pipe is positioned in the effusion section of a shaft. According to the draining gas recovery device, the foam discharging agent is injected into the effusion section and can generate foam in the shaft under the stirring action of fluid in the well, and thus the liquid density is reduced, the surface stress and the slip loss of gas are reduced, the fluid carrying capacity on the gas is improved, further the wellbore liquid is effectively reduced and the gas production rate of a gas well is improved.
Description
Technical field
The present invention relates to a kind of equipment of horizontal well water pumping gas production and utilize the operation operation method of this equipment.
Background technology
The horizontal gas well of domestic and international most low production and low pressure is at the production initial stage, especially middle and later periods, owing in gas well, often have hydro carbons condensed liquid or formation water to flow into the shaft bottom, when gas well output height, when gas-liquid the speed large and quantity of FIH in shaft bottom is relatively less, water will be carried into ground by air-flow fully, progress along with recovery process, stratum energy weakens naturally, the gas-liquid flow velocity also decreases, the special casing programme of horizontal well increases gas slip and the pressure loss in addition, so that the gas fluid-carrying capability is worse and worse, can't effectively shaft bottom liquid in time be brought to ground, cause the pit shaft hydrops to increase gradually.Because the existence of hydrops will increase the back pressure to gas-bearing formation, and limit its production capacity, sometimes even gas-bearing formation can be killed fully so that closing well, can't normally carry out so that produce, reduction gas well production efficiency, thus affect the economic benefit of whole gas field development.Thereby, select effective water drainage-gas recovery technology method in time the pit shaft hydrops to be discharged, recover gas well and normally produce particularly important.
At present, the extensive use foam drainaging gas cutting process technology solves the low-voltage and low-yield horizontal well pit shaft hydrops of Gas Reservoirs both at home and abroad, improve the recovery ratio problem, but conventional foaming water discharge agent dosing method mainly is directly to annotate by well head christmas tree tubing and casing, well hydrops section can't effectively be up to the standard, have a strong impact on drainage effect, be badly in need of exploring a kind of novel dosing method and solve the difficult problem that the horizontal well foam drainage gas recovery faces.
Summary of the invention
The objective of the invention is to solve the problem that has the hydrops section that effectively to be up to the standard in the foam discharging agent filling process now, a kind of capillary tube water drainage gas production device and operation method thereof are provided, this device injects the hydrops intersegmental part with foaming water discharge agent, under the effect that borehole fluid stirs, make foaming water discharge agent in pit shaft, produce foam, reduce fluid density, reduce the slippage loss of surface tension of liquid and gas, improve the gas fluid-carrying capability, thereby effectively reduce the pit shaft hydrops, improve the gas well gas production.
For achieving the above object, the technical solution used in the present invention is: a kind of capillary tube water drainage gas production device, comprise capillary tube, be used for capillary tube be lowered into the down-hole and with capillary tube trip out from the down-hole upper downhole device, wherein said capillary tube is in when injecting foam discharging agent in the well liquid, and its bottom is positioned at pit shaft hydrops section.
In technique scheme, described upper downhole device comprises console, injecting system, cylinder, injection head and spraying-preventing system, described console is controlled whole upper downhole device operation, wherein the injecting system is connected to an end capillaceous for injecting foam discharging agent to capillary tube, a part capillaceous is wrapped on the cylinder, injection head is connected with capillary tube and is used for the control capillary tube and provides power, spraying-preventing system to be arranged on capillary tube to enter well location and put for control well liquid and spray outward for going into the well on the capillary tube.
The operation method of above-mentioned capillary tube water drainage gas production device comprises the following steps:
Level monitoring well shaft bottom hydrops situation is for the concrete depth of setting of capillary tube provides foundation;
Utilize the drift size gauge tool drifting that is complementary with horizontal well pit shaft inner oil tube internal diameter, pass to the design well depth, guarantee fully unimpeded rear end drifting in the oil pipe;
Cylinder self can not rotate, thereby but driven by injection head during by the operation of operating desk control injection head cylinder rotated, console control injection head, drive capillary tube and be lowered into pit shaft hydrops section, when going into the well, the spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon;
The consumption of accurate-metering foaming water discharge agent and the amount of solution of preparation are injected foaming water discharge agent by capillary tube by the injecting system in well liquid.
In technique scheme, the operating process that capillary tube is tripped out from the down-hole comprises:
The spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon;
Cylinder tension capillary tube;
Console control injection head rotates back roll and just rotates the winding capillary tube;
After capillary tube trips out, wash capillary tube with clear water, guarantee to manage interior cleaning;
Well head resumes production.
In technique scheme, in normally removing the capillary tube process, ban use of blowout preventer; For the sand grains calker that prevents from carrying during the discharge opeing, the injecting stopping period, on carry capillary tube to more than the liquid level, during injecting the below capillary tube to carrying out injecting below the liquid level.
Can find out from every technical characterictic of the invention described above, its advantage is: namely go up downhole device by the ground special equipment capillary tube is lowered into horizontal well hydrops section, utilizing the ground pumping-in equipment is that the hydrops intersegmental part injects with foaming water discharge agent in the injecting system, under the effect that borehole fluid stirs, make foaming water discharge agent in pit shaft, produce foam, reduce fluid density, reduce the slippage loss of surface tension of liquid and gas, improve the gas fluid-carrying capability, thereby effectively reduce the pit shaft hydrops, improve the gas well gas production.
Description of drawings
Fig. 1 is structural principle schematic diagram of the present invention;
Wherein Reference numeral 1 is that capillary tube 2 is that console 3 is injecting systems
The 4th, cylinder 5 is that injection head 6 is spraying-preventing systems.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing and by specific embodiment.
Preferred embodiment
In the present embodiment, we will describe the operating process of capillary tube water drainage gas production device of the present invention in the water pumping gas production process and the operating process that cooperates with other relevant devices in detail by concrete operation, as shown in Figure 1:
, survey liquid level
With echometer level monitoring well shaft bottom hydrops situation, for the concrete depth of setting of capillary tube provides foundation.
, drifting
Utilize the drift size gauge tool drifting that is complementary with horizontal well pit shaft inner oil tube internal diameter, note recording the situation that is hampered of drift size gauge tool during drifting, pass to the design well depth, guarantee fully unimpeded rear end drifting in the oil pipe, concrete drifting operation is carried out according to the drifting working design.
, ground debugging
Need to carry out the debugging of following ground before the wellhead equipment lifting:
(1) injection head: chain greasisng is suitable, guaranteed, descended, the control such as brake flexibly.
(2) spraying-preventing system: under hydraulic pressure, manual case, blowout prevention flashboard switch is flexible, good seal.
(3) injecting system: pressure testing, leak test, guarantee working properlyly, start injectant pump, in capillary tube, annotate clear water or foaming water discharge agent, directly end capillaceous going into the well and bring out liquid.
, equipment installs
The installation of equipment and connection must be abideed by " operation of XPCQ-36 applications of coiled tubing unit and servicing manual " and carry out.Mainly comprise the processes such as skid body, startup diesel engine, installation preventer, assembling injection head and lubricator, installation underground tool string, the connection of injecting system are installed.
Wellhead equipment carries out whole pressure testing, leak test after installing, and guarantees well head safe.
, lower capillary tube
The maximum depth of setting of design capillary tube can be according to the liquid level adjustment.
Behind standard-sized sheet blowout preventer and the gate, carry out well operations under the capillary tube.
Should note following item during lower capillary tube:
(1) the spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon.
(2) tensioning initial pressure 3MPa clamps initial pressure 3 MPa.Along with the lower pipe degree of depth strengthens, can strengthen tensile force and clamping force, but should not surpass 5MPa.
(3) the drum pressure control valve is beaten in the position of " little ", and the cylinder directional control valve is beaten " transfer " position, speed valve transfers to maximum, and this moment, cylinder can not rotate, and was driven by injection head during the operation injection head.
(4) the injection head reversal valve is in " transferring ", strengthens gradually the rotation of injection head speed drive cylinder and transfers capillary tube.Speed is little during beginning, the lower 50m facilities for observation service behavior of examination.Carry out lowering-in operation by construction technology after normal, lowering velocity must not surpass 25m/min.
(5) utilize injection head when brake, must turn down lowering velocity first after, again reversal valve is turned round to meta, winch brake only is used for inactive state.
(6) in normally removing the capillary tube process, ban use of blowout preventer.
, capillary tube filling foaming water discharge agent
(1) for guaranteeing that capillary tube removes flexibly all the time, capillary tube removed 1 time in per 5 days, carry 100m on each, transfer 100m, movable tubing string.
(2) the sand grains calker in order to prevent from carrying during the discharge opeing, the injecting stopping period, on carry capillary tube to more than the liquid level, during injecting the below capillary tube to carrying out injecting below the liquid level.
(3) test and use before check carefully whether valve and pressure meter, joint, pipeline, pump in the filling technique on each pipeline, capillary tube filling apparatus and the christmas tree cleans, unimpeded, guarantee that medicine system is without leakage.
(4) amount of solution of the consumption of accurate-metering foaming water discharge agent and preparation is annotated in strict accordance with the filling consumption in the scheme, can regulate according to test situation and loading plan after stable.
(5) field technician must keep a close eye on test situation, and records the data such as filling consumption of well head oil pressure, casing pressure, gas production, aquifer yield and foaming water discharge agent, defoamer when testing, the data of recording must be true, accurately.
, carry out the construction parameter inspecting and recording
The inspecting and recording that comprises the construction parameters such as well head oil pressure, casing pressure, gas production, aquifer yield, injecting amount, injecting ratio and injecting time when carrying out construction.
, upper treated as capillary
When upper treated as capillary:
(1) the spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon.
(2) drum pressure select the position " in ", reversal valve is turned round the position to " on carry ", speed valve transfers to maximum, cylinder tension this moment pipe.
(3) the injection head reversal valve places " on carry " position, slowly adjusts the injection head pressure-control valve, and injection head rotates back roll and just rotates the winding pipe.
(4) behind running 3～5min, according to the load condition treated as capillary.If with rising at a high speed, adjust injection head motor displacement pressure and choke valve.Upward strain speed is controlled at 15～25m/min.
(5) after pipe trips out, release tensioning pressure, clamping pressure.Open the open circuit gate valve, lay down system pressure.
(6) after construction finishes, wash capillary tube with clear water, guarantee to manage interior cleaning.
(7) well head that resumes production.
Disclosed all features in this manual except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this manual (comprising any accessory claim, summary) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Claims (5)
1. capillary tube water drainage gas production device, it is characterized in that comprising capillary tube, be used for capillary tube be lowered into the down-hole and with capillary tube trip out from the down-hole upper downhole device, wherein said capillary tube is in when injecting foam discharging agent in the well liquid, its bottom is positioned at pit shaft hydrops section.
2. capillary tube water drainage gas production device according to claim 1, it is characterized in that described upper downhole device comprises console, injecting system, cylinder, injection head and spraying-preventing system, described console is controlled whole upper downhole device operation, wherein the injecting system is connected to an end capillaceous for injecting foam discharging agent to capillary tube, a part capillaceous is wrapped on the cylinder, injection head is connected with capillary tube and is used for the control capillary tube and provides power, spraying-preventing system to be arranged on capillary tube to enter well location and put for control well liquid and spray outward for going into the well on the capillary tube.
3. the operation method of above-mentioned capillary tube water drainage gas production device is characterized in that comprising the following steps:
Level monitoring well shaft bottom hydrops situation is for the concrete depth of setting of capillary tube provides foundation;
Utilize the drift size gauge tool drifting that is complementary with horizontal well pit shaft inner oil tube internal diameter, pass to the design well depth, guarantee fully unimpeded rear end drifting in the oil pipe;
Cylinder self can not rotate, thereby but driven by injection head during by the operation of operating desk control injection head cylinder rotated, console control injection head, drive capillary tube and be lowered into pit shaft hydrops section, when going into the well, the spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon;
The consumption of accurate-metering foaming water discharge agent and the amount of solution of preparation are injected foaming water discharge agent by capillary tube by the injecting system in well liquid.
4. operation method according to claim 3, it is characterized in that: the operating process that capillary tube is tripped out from the down-hole comprises:
The spraying-preventing system seal box suitably pressurizes, and guarantees that spraying-preventing system is without gas leak phenomenon;
Cylinder tension capillary tube;
Console control injection head rotates back roll and just rotates the winding capillary tube;
After capillary tube trips out, wash capillary tube with clear water, guarantee to manage interior cleaning;
Well head resumes production.
5. operation method according to claim 3 is characterized in that:
In normally removing the capillary tube process, ban use of blowout preventer;
For the sand grains calker that prevents from carrying during the discharge opeing, the injecting stopping period, on carry capillary tube to more than the liquid level, during injecting the below capillary tube to carrying out injecting below the liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210368247XA CN102852500A (en) | 2012-09-28 | 2012-09-28 | Draining gas recovery device for capillary pipe and operation method of draining gas recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210368247XA CN102852500A (en) | 2012-09-28 | 2012-09-28 | Draining gas recovery device for capillary pipe and operation method of draining gas recovery device |
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| CN102852500A true CN102852500A (en) | 2013-01-02 |
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| CN201210368247XA Pending CN102852500A (en) | 2012-09-28 | 2012-09-28 | Draining gas recovery device for capillary pipe and operation method of draining gas recovery device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587865A (en) * | 2012-02-29 | 2012-07-18 | 西南石油大学 | Foam drainage gas recovery method for natural gas horizontal well |
| CN107304664A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of bundle of capillary tubes christmas device and method |
| CN108386173A (en) * | 2018-03-27 | 2018-08-10 | 西南石油大学 | A kind of underground drug adding device and method for foam drainage gas recovery technique |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6854518B1 (en) * | 2002-03-12 | 2005-02-15 | Corley P. Senyard, Sr. | Method and apparatus for enhancing production from an oil and/or gas well |
| US20110209879A1 (en) * | 2009-12-15 | 2011-09-01 | Quigley Peter A | System and Methods for Removing Fluids from a Subterranean Well |
| CN102587865A (en) * | 2012-02-29 | 2012-07-18 | 西南石油大学 | Foam drainage gas recovery method for natural gas horizontal well |
-
2012
- 2012-09-28 CN CN201210368247XA patent/CN102852500A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6854518B1 (en) * | 2002-03-12 | 2005-02-15 | Corley P. Senyard, Sr. | Method and apparatus for enhancing production from an oil and/or gas well |
| US20110209879A1 (en) * | 2009-12-15 | 2011-09-01 | Quigley Peter A | System and Methods for Removing Fluids from a Subterranean Well |
| CN102587865A (en) * | 2012-02-29 | 2012-07-18 | 西南石油大学 | Foam drainage gas recovery method for natural gas horizontal well |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587865A (en) * | 2012-02-29 | 2012-07-18 | 西南石油大学 | Foam drainage gas recovery method for natural gas horizontal well |
| CN107304664A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of bundle of capillary tubes christmas device and method |
| CN108386173A (en) * | 2018-03-27 | 2018-08-10 | 西南石油大学 | A kind of underground drug adding device and method for foam drainage gas recovery technique |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
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Application publication date: 20130102 |