CN109838693B - Kill manifold liquid storage tank - Google Patents
Kill manifold liquid storage tank Download PDFInfo
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- CN109838693B CN109838693B CN201711221100.7A CN201711221100A CN109838693B CN 109838693 B CN109838693 B CN 109838693B CN 201711221100 A CN201711221100 A CN 201711221100A CN 109838693 B CN109838693 B CN 109838693B
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Abstract
The invention relates to the field of petroleum equipment, in particular to a kill manifold liquid storage tank. The kill manifold liquid storage tank includes: the well control manifold comprises a first valve group, a second valve group, a third valve group, a first liquid outlet pipeline, a second liquid outlet pipeline, a base, a liquid inlet pipeline and a tank body, wherein the liquid inlet pipeline and the tank body are arranged on the base, a well control manifold liquid storage tank is placed on a well site by using a crane, an operator communicates a first connecting port and a second connecting port of the liquid inlet pipeline with a wellhead Christmas tree, the liquid inlet pipeline is controlled to flow in or out by using the first valve group, the second valve group controls the fluid to flow in or out of the first liquid outlet pipeline, the third valve group controls the fluid to flow in or out of the second liquid outlet pipeline, and the disassembly and assembly of the well control manifold are replaced by the operation on the first valve group, the second valve group and the third valve group, so that the well repair operation of different procedures are realized, the preparation time of the construction is shortened, the labor intensity of the operator is reduced, and the environmental pollution caused by the falling of.
Description
Technical Field
The invention belongs to the field of petroleum equipment, and particularly relates to a kill manifold liquid storage tank.
Background
In the oil field well killing process, well repair is an operation of oil drilling and subsequent oil well maintenance, and the oil well can be ensured to be used smoothly by taking maintenance and servicing measures. In order to ensure the normal operation of workover, reduce the blowout accident, prevent the operation risk, workover equipment all is equipped with well control device: the well control manifold is a control device for guaranteeing safe workover operation, and the liquid storage tank is a storage device for workover liquid in the workover operation process.
The well control manifold and the liquid storage tank in the prior art are generally separately arranged, the well control manifold is arranged on the ground of a well site and comprises a pipeline and a pipeline valve group arranged on the pipeline, the pipeline can be communicated with a valve on a Christmas tree at the well head, the pipeline valve group can control the inflow and outflow of liquid, and the liquid storage tank is mainly used on site at present and is 15m3And 25m3Two kinds of jar bodies are hoisted to the well site through the crane, are provided with the liquid storage pot valves on the liquid storage pot, and the liquid storage pot valves are communicated with the pipeline in the well control manifold, and the liquid storage pot valves can control liquid to flow into and flow out of the liquid storage pot.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
in the prior art, a well control manifold is disassembled and assembled according to different operation procedures during well repairing operation, particularly in complex procedures such as cement injection plug, plugging layer, leakage finding, positive and negative sand flushing, because an oil pipe and a sleeve pipe need to be operated respectively, one end of a pipeline in the well control manifold is connected with an oil pipe interface or a sleeve pipe interface of a wellhead Christmas tree, the other end of the pipeline is connected with a liquid storage tank, the lengths of the pipelines used for communicating the oil pipe and the sleeve pipe are different, the well control manifold is disassembled and assembled for many times in the operation process, the operation time of constructors is long, the labor intensity is high, the operation efficiency is low, in the replacement process, sewage falls to the ground and causes environmental pollution, certain procedures need to be disassembled and assembled under the pressure build-up in a well, and the operation risk of wellhead operators is increased.
Disclosure of Invention
In view of the above, the invention provides a kill manifold liquid storage tank, which avoids repeated disassembly and assembly of a well control manifold, reduces the labor intensity of operating personnel, and reduces environmental pollution.
Specifically, the method comprises the following technical scheme:
a kill manifold reservoir, comprising: a first valve group, a second valve group, a third valve group, a first liquid outlet pipeline, a second liquid outlet pipeline, a base, a liquid inlet pipeline and a tank body which are arranged on the base, wherein,
the first valve group is arranged on the liquid inlet pipeline;
the second valve group is arranged on the first liquid outlet pipeline, the third valve group is arranged on the second liquid outlet pipeline, and the first liquid outlet pipeline and the second liquid outlet pipeline are arranged at the upper part of the tank body;
the liquid inlet pipeline comprises a first connecting port, a second connecting port, a third connecting port and a fourth connecting port; the first connecting port and the second connecting port are suitable for being communicated with a wellhead Christmas tree, the third connecting port is suitable for being communicated with one end of the first liquid outlet pipeline, the fourth connecting port is suitable for being communicated with one end of the second liquid outlet pipeline, and the other end of the first liquid outlet pipeline and the other end of the second liquid outlet pipeline are communicated into the tank body.
Further, first valves include single current valve, first gate valve, second gate valve, third gate valve, fourth gate valve and fifth gate valve, first gate valve sets up first connector with between the third connector, the second gate valve sets up the single current valve with between the first connector, the third gate valve sets up the second connector with between the single current valve, the fourth gate valve sets up the second connector with between the fourth connector, the fifth gate valve sets up between third connector and the fourth connector, the single current valve is suitable for and communicates with the cement truck.
Further, the kill manifold liquid storage tank further comprises a perfusion bin, wherein the perfusion bin is arranged in the tank body and is suitable for being communicated with the first liquid outlet pipeline through a first hose line.
Further, the kill manifold liquid storage tank further comprises a first submersible pump, the first submersible pump is connected with one end of the first hose line, and the other end of the first hose line is communicated with the first liquid outlet line.
Further, the second valve group comprises a sixth gate valve, a seventh gate valve and an eighth gate valve, the sixth gate valve is arranged between the third connecting port and the seventh gate valve, and the eighth gate valve is arranged between the seventh gate valve and one end of the first liquid outlet pipeline, which leads into the tank body.
Further, the kill manifold liquid storage tank further comprises an anti-freezing bin, wherein the anti-freezing bin is arranged in the tank body and is suitable for being communicated with the second liquid outlet pipeline through a second hose line.
Further, the kill manifold liquid storage tank further comprises a second submersible pump, the second submersible pump is connected with one end of the second hose line, and the other end of the second hose line is communicated with the second liquid outlet line.
Further, the third valves include a ninth gate valve, a tenth gate valve and an eleventh gate valve, the ninth gate valve is disposed between the fourth connection port and the tenth gate valve, and the eleventh gate valve is disposed between the tenth gate valve and one end of the second liquid outlet pipeline, which leads into the inside of the tank body.
Further, the kill-job manifold liquid storage tank further comprises a cover plate, wherein the cover plate is arranged on the upper portions of the first liquid outlet pipeline and the second liquid outlet pipeline and covers one ends of the first liquid outlet pipeline and the second liquid outlet pipeline which are communicated with the tank body.
Further, the kill manifold liquid storage tank further comprises a pressure gauge, and the pressure gauge is arranged on the liquid inlet pipeline through a bushing.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
the kill manifold liquid storage tank provided by the embodiment of the invention can be used for placing the kill manifold liquid storage tank on a well site by using a crane when well workover operation is carried out on site, an operator communicates a first connecting port and a second connecting port of a liquid inlet pipeline with a wellhead Christmas tree, a third connecting port of the liquid inlet pipeline is suitable for being communicated with a first liquid outlet pipeline, a fourth connecting port of the liquid inlet pipeline is suitable for being communicated with a second liquid outlet pipeline, and the first liquid outlet pipeline and the second liquid outlet pipeline are communicated with the inside of a tank body, so that fluid inflow or outflow of the liquid inlet pipeline is controlled by a first valve bank, fluid inflow or outflow of the liquid inlet pipeline is controlled by a second valve bank, fluid inflow or outflow of the first liquid outlet pipeline is controlled by a second valve bank, fluid inflow or outflow of the liquid outlet pipeline is controlled by a third valve bank, the well workover operation of different procedures is realized by replacing the disassembly and assembly of a well control manifold through the operation of the first valve bank, the second valve bank and, the environmental pollution caused by the falling of well repair liquid or oil stains in the process of disassembling and assembling the manifold is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a kill manifold reservoir according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a top view of a kill manifold reservoir according to an embodiment of the present invention;
fig. 3 is a schematic side view of a kill manifold reservoir according to an embodiment of the present invention.
The reference numbers in the figures are:
1. a first valve block;
101. a check valve;
102. a first gate valve;
103. a second gate valve;
104. a third gate valve;
105. a fourth gate valve;
106. a fifth gate valve;
2. a second valve block;
201. a sixth gate valve;
202. a seventh gate valve;
203. an eighth gate valve;
3. a third valve block;
301. a ninth gate valve;
302. a tenth gate valve;
303. an eleventh gate valve;
304. a throttle valve;
4. a first liquid outlet line;
401. a first outlet elbow;
402. a first tee joint;
5. a second liquid outlet line;
501. a second outlet elbow;
502. a second tee joint;
6. a base;
7. a liquid inlet pipeline;
701. a first connection port;
702. a second connection port;
703. a third connection port;
704. a fourth connection port;
705. a first cross;
706. a second cross;
707. a third cross;
708. a fourth cross;
709. a first plug;
710. a second plug;
8. a tank body;
801. a cover plate;
802. stretching a rib;
803. lifting lugs;
804. a sewage draining outlet;
9. filling a bin;
10. a first hose line;
11. a first submersible pump;
12. an anti-freezing bin;
13. a second hose line;
14. a second submersible pump;
15. a pressure gauge;
16. slips;
17. a union;
18. and fixing the clip.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
The embodiment of the invention provides a killing manifold liquid storage tank, which is structurally schematically shown in fig. 1 and comprises a first valve group 1, a second valve group 2, a third valve group 3, a first liquid outlet pipeline 4, a second liquid outlet pipeline 5, a base 6, a liquid inlet pipeline 7 and a tank body 8, wherein the liquid inlet pipeline 7 and the tank body 8 are arranged on the base 6.
The first valve group 1 is arranged on the inlet line 7.
The second valve group 2 is arranged on the first liquid outlet pipeline 4, the third valve group 3 is arranged on the second liquid outlet pipeline 5, and the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5 are arranged at the upper part of the tank body 8.
The liquid inlet line 7 includes a first connection port 701, a second connection port 702, a third connection port 703, and a fourth connection port 704; the first connector 701 and the second connector 702 are suitable for being communicated with a wellhead Christmas tree, the third connector 703 is suitable for being communicated with one end of the first liquid outlet pipeline 4, the fourth connector 704 is suitable for being communicated with one end of the second liquid outlet pipeline 5, and the other end of the first liquid outlet pipeline 4 and the other end of the second liquid outlet pipeline 5 are communicated with the inside of the tank body 8.
The kill-job manifold liquid storage tank provided by the embodiment of the invention can be used for placing the kill-job manifold liquid storage tank on a well site by using a crane when performing well workover operation on site, an operator communicates the first connector 701 and the second connector 702 of the liquid inlet pipeline 7 with a wellhead Christmas tree, as the third connector 703 of the liquid inlet pipeline 7 is suitable for being communicated with the first liquid outlet pipeline 4, the fourth connector 704 is suitable for being communicated with the second liquid outlet pipeline 5, and the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5 are communicated into the tank body 8, the first valve group 1 is used for controlling fluid to flow into or out of the liquid inlet pipeline 7, the second valve group 2 is used for controlling fluid to flow into or out of the first liquid outlet pipeline 4, the third valve group 3 is used for controlling fluid to flow into or out of the second liquid outlet pipeline 5, the well workover operation of different procedures is replaced by the operation on the first valve group 1, the second valve group 2 and the third valve group 3, the preparation time of construction is shortened, the labor intensity of operators is reduced, and the environmental pollution caused by the falling of workover fluid or oil stains in the process of disassembling and assembling the manifold is reduced.
The following respectively explains each part of the kill manifold liquid storage tank and the function thereof provided by the embodiment of the invention:
as for the first valve group 1, as shown in fig. 2, the first valve group 1 comprises a check valve 101, a first gate valve 102, a second gate valve 103, a third gate 104, a fourth gate valve 105 and a fifth gate valve 106;
the first gate valve 102 is disposed between the first connection port 701 and the third connection port 703 to control the flow of fluid from the first connection port 701 into or out of the third connection port 703;
the second gate valve 103 is disposed between the check valve 101 and the first connection port 701 to control the flow of fluid from the check valve 101 into or out of the first connection port 701;
a third gate valve 104 is arranged between the second connection port 702 and the check valve 101 to control the flow of fluid from the check valve 101 into or out of the second connection port 702;
the fourth gate valve 105 is provided between the second connection port 702 and the fourth connection port 704 to control the flow of fluid from the second connection port 702 into or out of the fourth connection port 704;
the fifth gate valve 106 is provided between the third connection port 703 and the fourth connection port 704 to control the flow of fluid from the third connection port 703 to the fourth connection port 704 or from the fourth connection port 704 to the third connection port 703;
the check valve 101 is suitable for being communicated with a cement truck, when reverse circulation well killing is needed, because the cement truck is filled with workover fluid, the workover fluid in the cement truck can enter the liquid inlet pipeline 7 through the check valve 101, then flows into the casing gate valve from the first connector 701, returns upwards to the oil pipe gate valve through the oil pipe after flowing to the bottom of the well, and finally flows into the liquid inlet pipeline 7 from the second connector 702, and the first liquid outlet pipeline 4 or the second liquid outlet pipeline 5 flows into the tank body 8;
or when positive circulation well killing is required, workover fluid in the cement truck can enter the liquid inlet pipeline 7 through the check valve 101, then flow into the tubing gate valve from the second connector 702, flow to the bottom of the well through the tubing collar, return upwards to the casing gate valve through the oil collar, finally flow into the liquid inlet pipeline 7 from the first connector 701, and flow into the tank body 8 through the first liquid outlet pipeline 4 or the second liquid outlet pipeline 5.
For the first and second liquid outlet lines 4 and 5, the first and second liquid outlet lines 4 and 5 are tubes for transporting fluid.
Further, a first outlet elbow 401 is arranged at one end of the first liquid outlet pipeline 4 which is communicated with the inside of the tank body 8, and a second outlet elbow 402 is arranged at one end of the second liquid outlet pipeline 5 which is communicated with the inside of the tank body 8, so that the high-pressure liquid which flows into the tank body 8 from the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5 can flow towards the bottom of the tank body 8.
As for the tank 8, the tank 8 is a rectangular parallelepiped, as shown in fig. 1, the tank 8 may be composed of a main frame, a bottom plate disposed at the bottom of the main frame, and vertical plates disposed around the main frame, so that the tank 8 forms an open container.
It should be noted that the bottom plate may be provided with a certain inclination to facilitate emptying of the workover fluid inside the tank 8, and meanwhile, the bottom plate may also be horizontally disposed, which is not specifically limited in the embodiment of the present invention.
The tank 8 further comprises a cover plate 801, the cover plate 801 is disposed on the upper portions of the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5, and covers one ends of the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5, which are led into the tank 8, as shown in fig. 2, so that when the liquid flows into the tank 8 from the first liquid outlet pipeline 4 or the second liquid outlet pipeline 5, the liquid cannot splash out of the tank 8 due to too fast flow rate to pollute the environment.
It will be appreciated that the cover plate 801 may cooperate with the first outlet bend 401 and the second outlet bend 402 provided at the ends of the first outlet line 4 and the second outlet line 5 leading into the interior of the tank 8.
The cover plate 801 can comprise two pieces structurally, the opening and closing of the two pieces are realized by hinges fixed on a cross beam at the upper end of the main body frame, the hinges are of a 180-degree opening and closing type, and a welded leakage-proof brim can be arranged below the cover plate 801; the cover plate 801 can also be arranged in a left-right sliding mode, the two cover plates 801 are arranged at the upper end of a main body frame with a track, vertical tracks are arranged on vertical frames on the left side and the right side of the cover plate 801, side plates taken out are arranged in the tracks, the side plates are also used for preventing liquid from splashing out, and pollution to a well site environment caused by construction is avoided.
The tank 8 further comprises a tie bar 802 and a lifting lug 803, wherein the tie bar 802 is arranged on the main body frame, and plays a role of a tie as shown in fig. 1, fig. 2 or fig. 3; the lifting lugs 803 are arranged at four corners of the upper portion of the main body frame and are used for being matched with a lifting hook of a crane, and the kill-job manifold liquid storage tank is convenient to carry.
In order to facilitate recording and identifying the storage amount of the liquid in the tank body 8, a scale is arranged on the inner wall of the tank body 8 and is used for helping an operator identify the liquid amount in the tank body 8.
In order to facilitate the discharge of liquid in the tank body 8, a drain 804 is formed in one side of the tank body 8, so that the liquid in the tank body 8 can be discharged from the drain 804, a gland can be arranged on the drain 804, a sealing ring is arranged on the gland, and the gland can be opened and closed through a hinge and a fixing bolt on the tank body 8.
Further, in the embodiment of the present invention, the kill manifold reservoir further includes a filling bin 9, the filling bin 9 is disposed in the tank 8, as shown in fig. 1 or fig. 2, and the filling bin 9 is adapted to communicate with the first fluid outlet line 4 through a first hose line 10 for containing the workover fluid.
So set up, when workover needs to go up the tubular column and requires to pour into workover fluid, workover fluid can flow through first hose line 10, first play liquid pipeline 4 and inlet line 7 from pouring into storehouse 9, enters into the sleeve pipe from first connector 701 or second connector 702.
It should be noted that the filling bin 9 is an independent bin body, and is disposed in the tank body 8, but is not communicated with other spaces in the tank body 8.
In order to realize the outflow of the workover fluid from the perfusion chamber 9, structurally:
on one hand, the well killing manifold liquid storage tank further comprises a first submersible pump 11, the first submersible pump 11 is connected with one end of a first hose line 10, the other end of the first hose line 10 is communicated with a first liquid outlet line 4, and the first submersible pump 11 is suitable for being immersed in workover fluid contained in the perfusion cabin 9 and can provide power for the workover fluid to flow out of the perfusion cabin 9;
on the other hand, the second valve group 2 includes a sixth gate valve 201, a seventh gate valve 202, and an eighth gate valve 203, and the sixth gate valve 201 is disposed between the third connection port 703 and the seventh gate valve 202 to control the inflow or outflow of the workover fluid from the third connection port 703; the eighth gate valve 203 is arranged between the seventh gate valve 202 and one end of the first liquid outlet pipeline 4 which is communicated with the inside of the tank body 8, and is used for controlling the fluid to flow into the tank body 8; the seventh gate valve 202 can be connected to the first fluid outlet line 4 by a threaded seamless steel line at both ends and to the first hose line 10, and the seamless steel line is connected to the first fluid outlet line 4 by a first tee 402, as shown in fig. 2, and is used for controlling the flow of workover fluid into or out of the injection silo 9.
It should be noted that, in order to facilitate the operator to identify the volume of the liquid in the filling tank 9, a scale may be provided in the filling tank 9, as shown in fig. 1, so that the operator can conveniently confirm whether to inject or discharge the workover fluid according to the display of the scale.
Further, in the embodiment of the present invention, the kill-job manifold liquid storage tank further includes an anti-freezing bin 12, the anti-freezing bin 12 is disposed in the tank 8, and the anti-freezing bin 12 is adapted to communicate with the second liquid outlet pipeline 5 through a second hose line 13, and anti-freezing bin 12 contains anti-freezing liquid for preventing the first liquid outlet pipeline 4, the second liquid outlet pipeline 5 and the liquid inlet pipeline 7 from being frozen to affect normal workover operation when the kill-job manifold liquid storage tank is used in winter.
It should be noted that the anti-freezing bin 12 is an independent bin body, as well as the filling bin 9, and is disposed in the tank 8, but is not communicated with other spaces in the tank 8, and the two are disposed in parallel at the front end of the tank 8 as shown in fig. 2.
The anti-freezing chamber 12 is made of stainless steel or other anti-corrosion materials, and is not particularly limited in the embodiment of the present invention.
The antifreeze may be brine or other antifreeze liquids, and is not particularly limited in the embodiment of the present invention.
In order to realize the outflow of the antifreeze solution from the antifreeze bin 12, the structure is as follows:
on one hand, the kill manifold reservoir further comprises a second submersible pump 14, as shown in fig. 3, the second submersible pump 14 is connected with one end of a second hose line 13, the other end of the second hose line 13 is communicated with the second liquid outlet line 5, and the second submersible pump 14 is suitable for being immersed into the antifreeze liquid contained in the antifreeze bin 12 and can provide power for the antifreeze liquid to flow out of the antifreeze bin 12;
on the other hand, the third valve group 3 includes a ninth gate valve 301, a tenth gate valve 302 and an eleventh gate valve 303, the ninth gate valve 301 is disposed between the fourth connection port 704 and the tenth gate valve 302 for controlling the inflow of antifreeze solution from the fourth connection port 704 to the eleventh gate valve 303 disposed between the tenth gate valve 302 and the end of the second liquid outlet line 5 that opens into the tank 8 for controlling the inflow of fluid into the tank 8; the tenth gate valve 302 can be connected to the second liquid outlet pipe 5 through a threaded seamless steel pipe and connected to the second hose line 13, and the seamless steel pipe is connected to the second liquid outlet pipe 5 through a second tee 502 for controlling the inflow or outflow of the antifreeze solution from the antifreeze bin 12.
The third valve group 3 further comprises a throttle valve 304, the throttle valve 304 is a high-pressure throttle valve, the throttle valve 304 is arranged on the second liquid outlet pipeline 5 and on the upper portion of the tank body 8 and is located between the eighth gate valve 203 and the fourth connecting port 704 of the liquid inlet pipeline 7, and the speed of releasing pressure required to be released in the well repairing operation can be controlled by controlling the throttle valve 304, so that the throttling function is achieved.
Meanwhile, the upper part of the anti-freezing bin 12 is provided with a bin cover, the bin cover can be provided with a gland capable of being opened and closed, the gland can be fixed on the bin cover through a hinge, and the gland is provided with a sealing ring and is opened and closed through a fixing bolt.
For inlet line 7, inlet line 7 includes a first cross 705, a second cross 706, a third cross 707, and a fourth cross 708, as shown in FIG. 2. Specifically, the first four-way 705 is arranged at the first connection port 701, and a port of the first four-way 705 is the first connection port 701 and can be connected with a tubing gate valve or a casing gate valve of a wellhead christmas tree through a pipeline; the second cross 706 is arranged at the second connecting port 702, and a through hole of the second cross 706 is the second connecting port 702 and can be connected with a tubing gate valve or a casing gate valve of a wellhead Christmas tree through a pipeline; the third cross 707 is arranged at the third connection port 703, and a connection port of the third cross 707 and the first liquid outlet pipeline 4 is the third connection port 703; the fourth four-way joint 708 is arranged at the fourth connecting port 704, and the port of the fourth four-way joint 708 connected with the second liquid outlet pipeline 5 is the fourth connecting port 704. The first cross 705, the second cross 706, the third cross 707, and the fourth cross 708 all function as connections.
It should be noted that the first cross 705, the second cross 706, the third cross 707, and the fourth cross 708 are all high pressure resistant components, and since only three ports of the first cross 705 and the second cross 706 need to be used, the port not used by the first cross 705 may be plugged by the first plug 709, and the port not used by the second cross 706 may be plugged by the second plug 710.
Furthermore, a plurality of slips 16 and an oil union 17 are arranged on the first liquid outlet pipeline 4, the second liquid outlet pipeline 5 and the liquid inlet pipeline 7, the slips 16 play a role in fixing, and the oil union 17 plays a role in connecting; the first liquid outlet pipeline 4 and the second liquid outlet pipeline 5 are fixed on the tank body 8 through a fixing clamp 18 and a rubber block.
For the base 6, the base 6 is a rectangular base and can be formed by welding i-steel and channel steel, for example, the i-steel is a main body of the base 6, and a plurality of channel steel transverse tie bars are welded at two ends and the middle part of the i-steel and used for fixing the tank body 8 and the liquid inlet pipeline 7;
the length of the base 6 is longer than that of the tank body 8, the value range is 140-160 cm, for example, the length of the base 6 can be longer than that of the tank body 8 by 150cm, the tank body 8 is arranged in the middle of the upper portion of the base 6 at a position which is slightly left, the distance between one end of the tank body 8 and one end of the same side of the base 6 is 30cm, and the distance between the other end of the tank body 8 and one end of the same side of the base 6 is 120 cm.
In order to facilitate observation of operators and ensure construction safety, the kill-job manifold liquid storage tank further comprises a pressure gauge 15, the pressure gauge 15 is a shock-proof pressure gauge, the pressure gauge 15 is arranged on the liquid inlet pipeline 7 through a bushing, as shown in fig. 2, the pressure of liquid passing through the liquid inlet pipeline 7 can be measured, the operators can conveniently carry out well repair operation through the value of the pressure gauge 15, and dangers possibly generated due to operation of the operators according to personal experience or direct operation at a wellhead are avoided.
It can be understood that the gate valves on the killing manifold liquid storage tank in the embodiment of the invention are all high-pressure gate valves, various pressure grade gauges can be equipped according to construction pressure, and the high-pressure gate valves can be all set as ball valves according to whether switches with pressure are pressed or not; meanwhile, all parts on the kill manifold liquid storage tank can be replaced at any time on site by detaching the fixing clips 18 and the slips 16 or breaking the union 17.
When the kill-job manifold liquid storage tank is adopted for well repair, the process flow can be divided into the following steps:
first, preparation work
Placing the kill manifold liquid storage tank at a proper position of a well site by using a crane, communicating a sleeve gate valve of a wellhead Christmas tree with a first connector 701 of a liquid inlet pipeline 7 of the kill manifold liquid storage tank, and communicating an oil pipe gate valve of the wellhead Christmas tree with a second connector 702 of the liquid inlet pipeline 7 of the kill manifold liquid storage tank; or, the tubing gate valve of the wellhead Christmas tree is communicated with the first connector 701 of the liquid inlet pipeline 7 of the kill manifold liquid storage tank, and the sleeve gate valve of the wellhead Christmas tree is communicated with the second connector 702 of the liquid inlet pipeline 7 of the kill manifold liquid storage tank.
Secondly, releasing pressure of the casing of the operation well
The first condition is as follows: the sleeve gate valve of the wellhead Christmas tree is communicated with a first connector 701 of a liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the tubing gate valve of the wellhead Christmas tree is communicated with a second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
There are two modes of operation:
(1) closing the second gate valve 103, the sixth gate valve 201, the tenth gate valve 302 and the throttle valve 304, and opening the first gate valve 102, the fifth gate valve 106, the ninth gate valve 301 and the eleventh gate valve 303; and then the casing gate valve on the Christmas tree of the operation well is opened, and the pressure release can be controlled by the constructor through operating the throttle valve 304.
(2) Firstly, closing the second gate valve 103, the fifth gate valve 106 and the seventh gate valve 202, and opening the first gate valve 102, the sixth gate valve 201 and the eighth gate valve 203; and opening a casing gate valve on the Christmas tree of the operating well to release pressure.
Preferably, in the (1) operation mode, the pressure release is controlled by operating the throttle valve 304, and the operation mode is safer and more reliable.
Meanwhile, during operation, the sliding cover plate 801 may be operated in order to prevent liquid from being splashed.
Case two: the tubing gate valve of the wellhead Christmas tree is communicated with the first connector 701 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the sleeve gate valve of the wellhead Christmas tree is communicated with the second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: the third gate valve 104, the fifth gate valve 106, the tenth gate valve 302 and the throttle valve 304 are closed, and the fourth gate valve 105, the ninth gate valve 301 and the eleventh gate valve 303 are opened; and then the Christmas tree sleeve gate valve of the operation well is opened, and the pressure release can be controlled by the constructor through controlling the throttle valve 304.
Meanwhile, during operation, the sliding cover plate 801 may be operated in order to prevent liquid from being splashed.
Thirdly, releasing pressure of the oil pipe of the operation well
The first condition is as follows: the sleeve gate valve of the wellhead Christmas tree is communicated with a first connector 701 of a liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the tubing gate valve of the wellhead Christmas tree is communicated with a second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: the third gate valve 104, the fifth gate valve 106, the tenth gate valve 302 and the throttle valve 304 are closed, and the fourth gate valve 105, the ninth gate valve 301 and the eleventh gate valve 303 are opened; and then the oil pipe gate valve of the Christmas tree of the operation well is opened, and the pressure release can be controlled by the constructor through controlling the throttle valve 304.
Meanwhile, during operation, the sliding cover plate 801 may be operated in order to prevent liquid from being splashed.
Case two: the tubing gate valve of the wellhead Christmas tree is communicated with the first connector 701 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the sleeve gate valve of the wellhead Christmas tree is communicated with the second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
There are two modes of operation:
(1) firstly, closing the second gate valve 103, the fourth gate valve 105, the sixth gate valve 201, the tenth gate valve 302 and the throttle valve 304, and opening the first gate valve 102, the fifth gate valve 106, the ninth gate valve 301 and the eleventh gate valve 303; and then the tubing gate valve of the Christmas tree of the operation well is opened, and the pressure release can be controlled by the constructor through operating the throttle valve 304.
(2) Firstly, closing the second gate valve 103, the fifth gate valve 106 and the seventh gate valve 202, and opening the first gate valve 102, the sixth gate valve 201 and the eighth gate valve 203; and opening an oil pipe gate valve of the Christmas tree of the operating well to release pressure.
Preferably, in the (1) operation mode, the pressure release is controlled by operating the throttle valve 304, and the operation mode is safer and more reliable.
Meanwhile, during operation, the sliding cover plate 801 may be operated in order to prevent liquid from being splashed.
Four, reverse circulation kill operation
The first condition is as follows: the sleeve gate valve of the wellhead Christmas tree is communicated with a first connector 701 of a liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the tubing gate valve of the wellhead Christmas tree is communicated with a second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: firstly, ensuring that a cement truck is in place, connecting an outlet of the cement truck with a check valve 101 on a kill manifold liquid storage tank through a pipeline, and then closing a first gate valve 102, a fourth gate valve 105, and a tubing gate valve and a casing gate valve of a wellhead Christmas tree; then, opening the second gate valve 103 and the third gate valve 104, and carrying out pressure test on the connecting pipeline; and after the pressure test is determined to be qualified, opening an oil pipe and a casing gate valve of the wellhead Christmas tree, then opening the second gate valve 103, the fourth gate valve 105, the ninth gate valve 301, the eleventh gate valve 303 and the throttle valve 304, and closing the third gate valve 104, the first gate valve 102, the fifth gate valve 106 and the tenth gate valve 302.
The flow path of the workover fluid is as follows: cement truck outlet-check valve 101-second gate valve 103-casing gate valve of wellhead christmas tree-bottom well tubing-tubing gate valve of wellhead christmas tree (back up along tubing) -fourth gate valve 105-throttle valve 304-ninth gate valve 301-eleventh gate valve 303-tank 8.
It should be noted that, the whole operation process can be controlled by controlling the throttle valve 304 to control the balance of the inlet and the outlet.
Case two: the tubing gate valve of the wellhead Christmas tree is communicated with the first connector 701 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the sleeve gate valve of the wellhead Christmas tree is communicated with the second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: firstly, ensuring that a cement truck is in place, connecting an outlet of the cement truck with a check valve 101 on a kill manifold liquid storage tank through a pipeline, and then closing a first gate valve 102, a fourth gate valve 105, and a tubing gate valve and a casing gate valve of a wellhead Christmas tree; then, opening the second gate valve 103 and the third gate valve 104, and carrying out pressure test on the connecting pipeline; after the pressure test is determined to be qualified, an oil jacket gate valve and a pipe gate valve of the wellhead Christmas tree are opened, then the third gate valve 104, the first gate valve 102, the fifth gate valve 106, the ninth gate valve 301, the eleventh gate valve 303 and the throttle valve 304 are opened, and the second gate valve 103, the fourth gate valve 105, the sixth gate valve 201 and the tenth gate valve 302 are closed.
The flow path of the workover fluid is as follows: cement truck outlet-check valve 101-third gate valve 104-casing gate valve of wellhead christmas tree-bottom well tubing-tubing gate valve of wellhead christmas tree (back up along tubing interior) -first gate valve 102-fifth gate valve 106-throttle valve 304-ninth gate valve 301-eleventh gate valve 303-tank 8.
It should be noted that, the whole operation process can be controlled by controlling the throttle valve 304 to control the balance of the inlet and the outlet.
Fifth, operation midway positive circulation well washing operation
The first condition is as follows: the tubing gate valve of the wellhead Christmas tree is communicated with the first connector 701 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the sleeve gate valve of the wellhead Christmas tree is communicated with the second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: firstly, ensuring that a cement truck is in place, connecting an outlet of the cement truck with a check valve 101 on a kill manifold liquid storage tank through a pipeline, and then closing a first gate valve 102, a fourth gate valve 105, and a tubing gate valve and a casing gate valve of a wellhead Christmas tree; then, opening the second gate valve 103 and the third gate valve 104, and carrying out pressure test on the connecting pipeline; after the pressure test is determined to be qualified, opening a tubing gate valve and a casing gate valve of the wellhead Christmas tree, then opening the third gate valve 104, the first gate valve 102, the sixth gate valve 201 and the eighth gate valve 203, and closing the second gate valve 103, the fourth gate valve 105, the fifth gate valve 106 and the seventh gate valve 202.
The flow path of the workover fluid is as follows: cement truck outlet-check valve 101-third gate valve 104-tubing gate valve of wellhead christmas tree-bottom tubing nozzle-casing gate valve of wellhead christmas tree (going up along tubing and casing annular space) -first gate valve 102-sixth gate valve 201-eighth gate valve 203-tank 8.
Case two: the sleeve gate valve of the wellhead Christmas tree is communicated with a first connector 701 of a liquid inlet pipeline 7 of the kill-job manifold liquid storage tank, and the tubing gate valve of the wellhead Christmas tree is communicated with a second connector 702 of the liquid inlet pipeline 7 of the kill-job manifold liquid storage tank.
The operation mode is as follows: firstly, ensuring that a cement truck is in place, connecting an outlet of the cement truck with a check valve 101 on a kill manifold liquid storage tank through a pipeline, and then closing a first gate valve 102, a fourth gate valve 105, and a tubing gate valve and a casing gate valve of a wellhead Christmas tree; then, opening the second gate valve 103 and the third gate valve 104, and carrying out pressure test on the connecting pipeline; and after the pressure test is determined to be qualified, opening a tubing gate valve and a casing gate valve of the wellhead Christmas tree, then opening a third gate valve 104, a fourth gate valve 105, a ninth gate valve 301 and an eleventh gate valve 303, and then closing the third gate valve 104, the first gate valve 102, a fifth gate valve 106 and a tenth gate valve 302.
Flow path of workover fluid: cement truck outlet-check valve 101-second gate valve 103-tubing gate valve of wellhead christmas tree-bottom tubing nozzle-casing gate valve of wellhead christmas tree (going up along tubing and casing annular space) -ninth gate valve 301-eleventh gate valve 303-tank 8.
Use of perfusion cabin
The use condition is as follows: when the pipe column is lifted in the well repairing operation, the well repairing liquid is required to be poured into the casing.
The first condition is as follows: the first connection port 701 of the liquid inlet line 7 is connected to the casing gate valve of the christmas tree.
During the injection, a casing gate valve, a first gate valve 102, a sixth gate valve 201 and a seventh gate valve 202 of the Christmas tree are opened, a second gate valve 103, a fifth gate valve 106 and an eighth gate valve 203 are closed, workover fluid is injected into the casing of the operating well from the injection bin 9 by using the first submersible pump 11, and the volume of the workover fluid in the injection bin 9 is recorded in the injection process.
The flow path of the workover fluid is as follows: the irrigation chamber 9, the first submersible pump 11, the seventh gate valve 202, the sixth gate valve 201, the first gate valve 102, the first connection port 701, the casing gate valve of the wellhead christmas tree, and the casing.
It should be noted that the operator is required to constantly observe the amount of the workover fluid being pumped to prevent the amount of the workover fluid being pumped from being less than or exceeding a predetermined amount. When the injection reaches around the predetermined amount, the first submersible pump 11 is immediately shut down and the amount of injected workover fluid is recorded.
Case two: the second connection port 702 of the liquid inlet line 7 is connected to the casing gate valve of the christmas tree.
During the injection, a sleeve gate valve, a fourth gate valve 105, a fifth gate valve 106, a sixth gate valve 201 and a seventh gate valve 202 of the Christmas tree are opened, a third gate valve 104, a ninth gate valve 301 and an eighth gate valve 203 are closed, workover fluid is injected into the injection bin 9 by using the first submersible pump 11, the volume of the workover fluid in the injection bin 9 is recorded, the workover fluid is injected into the sleeve of the operation well from the injection bin 9 by using the first submersible pump 11, and the volume of the workover fluid in the injection bin 9 is recorded in the injection process.
The flow path of the workover fluid is as follows: the filling bin 9, the first submersible pump 11, the seventh gate valve 202, the sixth gate valve 201, the fifth gate valve 106, the fourth gate valve 105, the second connecting port 702, and the casing gate valve-casing of the wellhead christmas tree.
It should be noted that the operator is required to constantly observe the amount of the workover fluid being pumped to prevent the amount of the workover fluid being pumped from being less than or exceeding a predetermined amount. When the injection reaches around the predetermined amount, the first submersible pump 11 is immediately shut down and the amount of injected workover fluid is recorded.
Use of anti-freezing bin
The use condition is as follows: winter (freezing season).
It should be noted that: the workover fluid is used when the workover fluid is clear water, and is not used when the well is brine or slurry.
The use time is as follows: and after the workover operation is stopped on the same day.
Take the first connection port 701 of the liquid inlet pipeline 7 connected to the tubing of the wellhead christmas tree and the second connection port 702 of the liquid inlet pipeline 7 connected to the casing of the wellhead christmas tree as an example.
The anti-freezing bin 12 is empty, and the constructor injects anti-freezing liquid into the anti-freezing bin 12 during the construction process, which is explained by taking brine as an example in the embodiment.
In the operation process, the oil pipe is firstly filled, and then the sleeve is filled.
Specifically, the tubing is primed. Opening all gate valves of the first valve group 1, the second valve group 2 and the third valve group 3, closing a casing gate valve of a wellhead Christmas tree, starting the second submersible pump 14 in the anti-freezing bin 12, and closing the eleventh gate valve 303 after liquid flows into the tank body 8 from the second liquid outlet pipeline 5; when liquid flows into the tank 8 from the first liquid outlet pipeline 4, the eighth gate valve 203 is closed; finally, brine is injected twice the volume of the pipeline, and the second submersible pump 14 is then turned off.
And (3) casing pipe pouring, closing the second gate valve 103 and the first gate valve 102, opening the casing pipe gate valve of the wellhead Christmas tree, starting the second submersible pump 14, pouring brine according to twice of the volume of the pipeline, and then stopping the submersible pump 14.
After the oil pipe and the sleeve are filled, clean water in all pipelines and manifolds is replaced by brine, and the anti-freezing purpose is achieved. And after the replacement is finished, opening all gate valves of the first valve group 1, the second valve group 2 and the third valve group 3, and closing an oil pipe gate valve and a casing pipe gate valve of the wellhead Christmas tree.
Eighthly, tank cleaning treatment after well repairing operation is finished
After the well repair operation is completed, the waste liquid in the tank body 8 can be discharged through the drain 804 on the tank body 8, and the pollution to the environment is strictly prohibited due to the current environmental protection requirement, so that the method is mostly unnecessary.
The liquid in the tank 8 is now pumped into the tanker by a cement truck or submersible pump and the liquid is transported by the tanker to a disposal station for disposal. After the cover plate 801 on the anti-freezing bin 12 is closed, the emptied kill manifold liquid storage tank can be hoisted and conveyed to the next well to be repaired for use.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A kill manifold reservoir, comprising: a first valve group (1), a second valve group (2), a third valve group (3), a first liquid outlet pipeline (4), a second liquid outlet pipeline (5), a base (6), a liquid inlet pipeline (7) and a tank body (8) which are arranged on the base (6),
the first valve group (1) is arranged on the liquid inlet pipeline (7);
the second valve group (2) is arranged on the first liquid outlet pipeline (4), the third valve group (3) is arranged on the second liquid outlet pipeline (5), and the first liquid outlet pipeline (4) and the second liquid outlet pipeline (5) are arranged at the upper part of the tank body (8);
the liquid inlet pipeline (7) comprises a first connecting port (701), a second connecting port (702), a third connecting port (703) and a fourth connecting port (704); the first connecting port (701) and the second connecting port (702) are suitable for being communicated with a wellhead Christmas tree, the third connecting port (703) is suitable for being communicated with one end of the first liquid outlet pipeline (4), the fourth connecting port (704) is suitable for being communicated with one end of the second liquid outlet pipeline (5), and the other end of the first liquid outlet pipeline (4) and the other end of the second liquid outlet pipeline (5) are communicated into the tank body (8);
the first valve group (1) comprises a check valve (101), a first gate valve (102), a second gate valve (103), a third gate valve (104), a fourth gate valve (105) and a fifth gate valve (106), wherein the first gate valve (102) is arranged between a first connecting port (701) and a third connecting port (703), the second gate valve (103) is arranged between the check valve (101) and the first connecting port (701), the third gate valve (104) is arranged between a second connecting port (702) and the check valve (101), the fourth gate valve (105) is arranged between the second connecting port (702) and a fourth connecting port (704), the fifth gate valve (106) is arranged between the third connecting port (703) and the fourth connecting port (704), and the check valve (101) is suitable for being communicated with a cement truck.
2. The kill manifold reservoir according to claim 1, characterized in that it further comprises a perfusion silo (9), the perfusion silo (9) being arranged within the tank (8) and the perfusion silo (9) being adapted to communicate with the first liquid outlet line (4) through a first hose line (10).
3. The kill manifold reservoir according to claim 2, characterized in that it further comprises a first submersible pump (11), the first submersible pump (11) being connected to one end of the first hose line (10), the other end of the first hose line (10) being in communication with the first liquid outlet line (4).
4. The kill manifold reservoir of claim 3, wherein the second valve block (2) comprises a sixth gate valve (201), a seventh gate valve (202), and an eighth gate valve (203), the sixth gate valve (201) being disposed between the third connection port (703) and the seventh gate valve (202), the eighth gate valve (203) being disposed between the seventh gate valve (202) and an end of the first outlet line (4) opening into the interior of the tank (8).
5. The kill manifold reservoir according to claim 1, characterized in that it further comprises an anti-freeze bin (12), said anti-freeze bin (12) being arranged within said tank (8), and said anti-freeze bin (12) being adapted to communicate with said second liquid outlet line (5) through a second hose line (13).
6. The kill manifold reservoir according to claim 5, characterized in that it further comprises a second submersible pump (14), the second submersible pump (14) being connected to one end of the second hose line (13), the other end of the second hose line (13) being in communication with the second liquid outlet line (5).
7. The kill manifold reservoir of claim 6, wherein the third valve block (3) comprises a ninth gate valve (301), a tenth gate valve (302) and an eleventh gate valve (303), the ninth gate valve (301) being disposed between the fourth connection port (704) and the tenth gate valve (302), the eleventh gate valve (303) being disposed between the tenth gate valve (302) and an end of the second outlet line (5) opening into the interior of the tank (8).
8. The kill manifold reservoir of claim 1, wherein the tank (8) comprises a cover plate (801), the cover plate (801) being disposed above the first and second outlet lines (4, 5) and covering an end of the first and second outlet lines (4, 5) opening into the tank (8).
9. The kill manifold reservoir of claim 1, further comprising a pressure gauge (15), wherein the pressure gauge (15) is disposed on the inlet line (7) by a bushing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711221100.7A CN109838693B (en) | 2017-11-29 | 2017-11-29 | Kill manifold liquid storage tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221100.7A CN109838693B (en) | 2017-11-29 | 2017-11-29 | Kill manifold liquid storage tank |
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| CN109838693B true CN109838693B (en) | 2021-01-29 |
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| CN205225173U (en) * | 2015-09-25 | 2016-05-11 | 中国石油化工股份有限公司 | Workover fluid draws use system fast |
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| NZ532559A (en) * | 2001-09-28 | 2005-06-24 | Honeyman Group Ltd | Fluid delivery system |
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| CN201206444Y (en) * | 2008-04-19 | 2009-03-11 | 中国石化股份胜利油田分公司东辛采油厂 | Composite tubing for plugging and acidizing construction downhole |
| CN101929316A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Foam liquid well flushing process |
| CN202326161U (en) * | 2011-11-04 | 2012-07-11 | 中国石油天然气集团公司 | Liquid discharge manifold of atomization pump |
| CN203641888U (en) * | 2013-11-21 | 2014-06-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Portable overall high pressure mainfold device |
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