CN111364948A - Natural gas well and well group - Google Patents
Natural gas well and well group Download PDFInfo
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- CN111364948A CN111364948A CN202010360576.4A CN202010360576A CN111364948A CN 111364948 A CN111364948 A CN 111364948A CN 202010360576 A CN202010360576 A CN 202010360576A CN 111364948 A CN111364948 A CN 111364948A
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- 239000002343 natural gas well Substances 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 claims abstract description 266
- 239000007789 gas Substances 0.000 claims abstract description 90
- 230000001105 regulatory effect Effects 0.000 claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 28
- 239000003345 natural gas Substances 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 description 23
- 238000007599 discharging Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pipeline Systems (AREA)
Abstract
The application relates to the technical field of natural gas exploitation and discloses a natural gas well and a well group. A natural gas well includes: gas production trees; the first conveying pipeline is connected with a sleeve production port of the gas production tree; the first conveying regulating valve is arranged on the first conveying pipeline; one end of the second conveying pipeline is connected with an oil pipe production pipeline of the gas production tree, and the other end of the second conveying pipeline is connected with the first conveying pipeline; the second conveying regulating valve is arranged on the second conveying pipeline; wherein the first delivery conduit is configured to communicate with a first delivery conduit of another natural gas well. The natural gas well and the well group disclosed by the application can make full use of energy and effectively distribute the energy.
Description
Technical Field
The application relates to the technical field of natural gas exploitation, in particular to a natural gas well and a well group.
Background
Different gas wells vary in energy.
Some natural gas wells still have enough energy, can maintain self-injection production, have large production flow and can bring accumulated liquid at the bottom of the well out of the well. However, the high-energy well has the problem of energy waste during production. When the natural gas flow rate in the well bore exceeds the critical fluid carrying flow rate, more energy is used to overcome the frictional resistance between the fluid and the well bore instead of carrying fluid, which results in wasted energy.
Some natural gas wells have the problem of insufficient energy, the production flow is lower than the critical liquid carrying flow, and liquid carrying is impossible, so that liquid accumulation at the bottom of the well is more and more serious, and the production is finally stopped. Low energy wells may also not support the implementation of drainage measures such as plug drainage.
Disclosure of Invention
Embodiments of the present application provide a natural gas well that can be used to form a well cluster to achieve efficient use of energy.
Embodiments of the present application also provide a well group, which is formed by the above-described natural gas well and can achieve full use of energy.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
a natural gas well comprising: gas production trees; the first conveying pipeline is connected with a sleeve production port of the gas production tree; the first conveying regulating valve is arranged on the first conveying pipeline; one end of the second conveying pipeline is connected with an oil pipe production pipeline of the gas production tree, and the other end of the second conveying pipeline is connected with the first conveying pipeline; the second conveying regulating valve is arranged on the second conveying pipeline; wherein the first delivery conduit is configured to communicate with a first delivery conduit of another natural gas well.
Further, the first conveying adjusting valve is located between the connecting position of the second conveying pipeline and the first conveying pipeline and a sleeve production opening of the gas production tree.
Further, the system also comprises a blowout preventer, a production branch pipe and a production regulating valve; the blowout preventer is arranged at the top end of the gas production tree, one section of the production branch pipe is connected with the blowout preventer, and the other end of the production branch pipe is connected with an oil pipe production pipeline of the gas production tree; the production regulating valve is arranged on the production branch pipe.
Further, still include the production stop valve, the production stop valve sets up on the production branch pipe.
Further, still include the oil pressure detector, the oil pressure detector sets up on the production branch pipe, and is located between production governing valve and the lubricator.
Further, the gas production tree further comprises a first pressure delivery detector, and the first pressure delivery detector is arranged on an oil pipe production pipeline of the gas production tree.
Further, still include the casing pressure detector, the casing pressure detector sets up on first pipeline, and is located between the sleeve pipe production mouth of first transport governing valve and gas production tree.
Further, the gas production system also comprises a second pressure transmission detector, the second pressure transmission detector is arranged on the first conveying pipeline, and the first conveying regulating valve is positioned between the second pressure transmission detector and the casing production port of the gas production tree.
A well cluster, comprising: any of the above natural gas wells, and well group piping; wherein, the first conveying pipelines of the natural gas wells are communicated with the well group pipelines.
Further, all gas wells are located on the same platform.
The technical scheme of the application has following advantage and beneficial effect at least:
in a plurality of natural gas wells provided by embodiments of the present application, a well group is formed by connecting a first delivery pipe to a well group pipeline. Therefore, casing gas in a high-energy natural gas well can enter a casing of a low-energy natural gas well, so that the flow rate of natural gas in the low-energy natural gas well can be increased to reach or exceed the critical liquid carrying flow rate, and liquid accumulation at the bottom of a well is reduced. On the other hand, the flow of the natural gas in the high-energy natural gas well can be reduced to be close to the critical liquid carrying flow, the energy waste is reduced, and the energy is fully utilized and effectively distributed. In addition, casing gas in a high-energy natural gas well enters a low-energy natural gas inlet casing, so that the low-energy natural gas well can be helped to complete a plunger discharging and producing process. The natural gas well provided by the embodiment of the application can also realize annular production. Furthermore, if oil pipe production pipelines of all or part of the natural gas wells in the well group are connected to the compressor for pressurized production, when the low-energy natural gas wells connected to the compressor need to be shut down due to the implementation of the discharging and producing processes such as plunger discharging and producing, intermittent opening or blowout prevention, casing gas of the high-energy natural gas wells can enter the oil pipe production pipelines of the low-energy natural gas wells, so that the air inlet pressure of the compressor is stabilized, the air inlet pressure of the compressor is prevented from being greatly fluctuated, and the pressurized production can be combined with the discharging and producing processes such as plunger discharging and producing, intermittent opening or blowout prevention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below. It is appreciated that the following drawings depict only certain embodiments of the application and are not to be considered limiting of its scope. From these figures, other figures can be derived by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a well group provided in an embodiment of the present application.
In the figure: 010-well group; 011-well group piping; 012-main blowout pipe; 013-production of header pipe; 100-natural gas wells; 101-valve number one; 102-valve number two; 103-valve number three; 104-valve number four; 105-five valve; 106-valve number six; no. 107-seven valve; 108-eighth valve; valve No. 109-nine; a No. 110-ten valve; valve No. 111-eleven; 112-tubing production tubing; 113-casing production tubing; 113 a-casing production port; 114-oil pipe blowout pipeline; 115-casing blowout pipeline; 116-a main conduit; 131-an oil pipe; 132-a cannula; 133-a first delivery conduit; 134-a second delivery conduit; 135-first delivery regulating valve; 136-a second delivery regulating valve; 141-a blowout preventer; 142-producing a manifold; 143-production regulating valve; 144-production stop valve; 145-oil pressure detector; 146-a first output pressure detector; 147-a casing pressure detector; 148-a second output pressure detector; 200-natural gas wells; 201-valve number one; 202-valve number two; 203-valve number three; 204-valve number four; 205-valve five; valve number 206-six; 207-seven valve; 208-eighth valve; 209-nine valve; 210-ten valves; valve number 211-eleven; 212-tubing production tubing; 213-casing the production conduit; 213 a-casing production port; 214-oil pipe blowout pipeline; 215-casing blowout conduit; 216-a main conduit; 231-oil pipe; 232-a sleeve; 233-a first delivery conduit; 234-a second delivery conduit; 235-a first delivery regulating valve; 236-a second delivery regulating valve; 241-a blowout preventer; 242-producing a branch pipe; 243-production regulating valve; 244-production stop valve; 245-an oil pressure detector; 246-a first output pressure detector; 247-a casing pressure detector; 248 — a second output pressure detector; 300-natural gas wells; 301-valve number one; 302-valve number two; 303-valve number three; 304-valve number four; 305-valve five; 306-valve number six; 307-seventh valve; 308-eighth valve; 309-nine valves; valve number 310-ten; 311-eleven valves; 312-tubing production tubing; 313-casing a production pipe; 313 a-casing production port; 314-tubing blowout pipeline; 315-casing blowout pipeline; 316-main pipe; 331-oil pipe; 332-a sleeve; 333-a first delivery conduit; 334-a second delivery conduit; 335-a first delivery regulating valve; 336-second delivery regulating valve; 341-blowout preventer; 342-production manifold; 343-production regulating valve; 344-production stop valve; 345-oil pressure detector; 346-a first output pressure detector; 347-casing pressure detector; 348 — a second pressure input detector; 400-natural gas wells; 401-valve number one; 402-valve number two; 403-valve number three; 404-valve number four; 405-five valves; 406-valve number six; 407-valve seven; 408-eighth valve; 409-nine valves; a number 410-ten valve; valve number 411-eleven; 412-tubing production tubing; 413-casing production tubing; 413 a-casing production port; 414-oil pipe blowout pipeline; 415-casing blowout pipeline; 416-a main conduit; 431-tubing; 432-a sleeve; 433-a first delivery conduit; 434-a second delivery conduit; 435-a first delivery regulating valve; 436-second delivery regulating valve; 441-a blowout preventer; 442-production leg; 443-production regulating valve; 444-production stop valve; 445-oil pressure detector; 446 — a first output pressure detector; 447-a casing pressure detector; 448-second output pressure detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described in detail and completely with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments.
Thus, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of some embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that, in the embodiments and the features and technical solutions in the embodiments of the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the product of the present invention is used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, a natural gas well may be a natural gas well for collecting conventional natural gas, and may also be a natural gas well for collecting unconventional natural gas (shale gas, coal bed gas, etc.).
Example 1:
referring to fig. 1, the well group 010 provided by the embodiment of the present application includes four natural gas wells, namely, a natural gas well 100, a natural gas well 200, a natural gas well 300, and a natural gas well 400. The structures of four natural gas wells are completely consistent. It should be noted that in other embodiments, the number of gas wells is not limited to four. The example of well cluster 010 including four natural gas wells is merely exemplary. Preferably, the individual gas wells that make up well group 010 are located on the same platform.
In the embodiment of the present application, the natural gas well 100 includes a production tree, a tubing 131, a casing 132, a first delivery conduit 133, a second delivery conduit 134, a first delivery regulating valve 135, and a second delivery regulating valve 136. The gas production tree comprises a first valve 101, a second valve 102, a third valve 103, a fourth valve 104, a fifth valve 105, a sixth valve 106, a seventh valve 107, an eighth valve 108, a ninth valve 109, a tenth valve 110, an eleventh valve 111, an oil pipe production pipeline 112, a casing production pipeline 113, an oil pipe blowout pipeline 114, a casing blowout pipeline 115 and a main pipeline 116. Main conduit 116 is connected to the top end of oil pipe 131. In the direction from bottom to top, the first valve 101, the fourth valve 104, and the seventh valve 107 are disposed on the main pipe 116 in this order. One end of the tubing production conduit 112 is connected to the main conduit 116 at a location between the four-way valve 104 and the seven-way valve 107. One end of the oil pipe blowout pipeline 114 is connected to the main pipeline 116, and the connection position is located between the fourth valve 104 and the seventh valve 107. In a direction away from main conduit 116, eighth valve 108 and tenth valve 110 are disposed in sequence on tubing production conduit 112. In a direction away from the main pipe 116, a ninth valve 109 and an eleventh valve 111 are sequentially provided on the oil pipe blowout pipeline 114. One end of the casing production pipe 113 is connected to the top end of the casing 132, and one end of the casing blowout pipe 115 is connected to the top end of the casing 132. In a direction away from casing 132, valve No. two 102 and valve No. five 105 are disposed in sequence on casing production line 113. In a direction away from the casing 132, the valve three 103 and the valve six 106 are disposed on the casing blowout duct 115 in this order. The end of the casing producing conduit 113 remote from the casing 132 constitutes a casing producing port 113 a. One end of the first delivery pipe 133 is connected to the casing producing port 113 a. A first delivery regulating valve 135 is provided on the first delivery pipe 133. One end of the second transfer pipe 134 is connected to the tubing production pipe 112, and the other end of the second transfer pipe 134 is connected to the first transfer pipe 133. A second delivery regulating valve 136 is provided on the second delivery pipe 134. Gas well 100 also includes blowout preventer 141, production leg 142, and production regulator valve 143. Blowout preventers 141 are provided at the top end of the main pipe 116. One end of production leg 142 is connected to blowout preventer 141. The other end of production manifold 142 is connected to tubing production tubing 112 at a location between eighth valve 108 and tenth valve 110. A production regulating valve 143 is provided on the production manifold 142. The gas well 100 also includes a production shut-off valve 144, the production shut-off valve 144 being disposed on the production manifold 142. Production regulator valve 143 is located between production shut-off valve 144 and blowout preventer 141. The gas well 100 also includes an oil pressure detector 145, the oil pressure detector 145 being disposed on the production leg 142 between the production regulator valve 143 and the blowout preventer 141. The gas well 100 also includes a first pressure delivery detector 146, the first pressure delivery detector 146 being disposed on the tubing production tubing 112 between the tenth valve 110 and the connection of the production leg 142 to the tubing production tubing 112. The gas well 100 also includes a casing pressure detector 147, the casing pressure detector 147 being disposed on the first conveyance pipe 133 between the first conveyance regulating valve 135 and the casing production port 113 a. The gas well 100 further includes a second pressure input detector 148, the second pressure input detector 148 being disposed on the first delivery conduit 133, and the first delivery regulator valve 135 being located between the second pressure input detector 148 and the casing pressure detector 147. Further, a first delivery regulating valve 135 is located between the connection position of the second delivery pipe 134 and the first delivery pipe 133 and the casing production port 113 a. The first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, the sixth valve 106, the seventh valve 107, the eighth valve 108, the ninth valve 109, the tenth valve 110, and the eleventh valve 111 are all flat plate valves. During normal production, the third valve 103, the sixth valve 106, the eighth valve 108, the ninth valve 109, and the eleventh valve 111 are closed, and the remaining flat valves are opened. Both the first delivery regulating valve 135 and the second delivery regulating valve 136 are closed. The production regulating valve 143 and the production stop valve 144 are both opened.
In the present embodiment, gas well 200 includes a production tree, tubing 231, casing 232, first delivery conduit 233, second delivery conduit 234, first delivery regulator valve 235, and second delivery regulator valve 236. The gas production tree comprises a first valve 201, a second valve 202, a third valve 203, a fourth valve 204, a fifth valve 205, a sixth valve 206, a seventh valve 207, an eighth valve 208, a ninth valve 209, a tenth valve 210, an eleventh valve 211, an oil pipe production pipeline 212, a casing production pipeline 213, an oil pipe blowout pipeline 214, a casing blowout pipeline 215 and a main pipeline 216. The main conduit 216 is connected to the top end of the oil pipe 231. In the direction from bottom to top, the first valve 201, the fourth valve 204, and the seventh valve 207 are provided on the main pipe 216 in this order. Tubing production line 212 is connected at one end to main conduit 216 at a connection location between valve four 204 and valve seven 207. One end of the oil pipe blowout pipeline 214 is connected to the main pipeline 216, and the connection position is located between the fourth valve 204 and the seventh valve 207. In a direction away from main conduit 216, eighth valve 208 and tenth valve 210 are disposed in sequence on tubing production conduit 212. In a direction away from the main pipe 216, a ninth valve 209 and an eleventh valve 211 are sequentially arranged on the oil pipe blowout pipeline 214. One end of the casing production pipe 213 is connected to the top end of the casing 232, and one end of the casing blowout pipe 215 is connected to the top end of the casing 232. Valve two 202 and valve five 205 are in turn disposed on casing production tubing 213 in a direction away from casing 232. In a direction away from the casing 232, a third valve 203 and a sixth valve 206 are sequentially disposed on the casing blowout conduit 215. The end of casing production conduit 213 remote from casing 232 constitutes casing production port 213 a. One end of the first delivery pipe 233 is connected to the casing producing port 213 a. A first delivery regulating valve 235 is provided on the first delivery pipe 233. One end of the second delivery conduit 234 is connected to the tubing production conduit 212 and the other end of the second delivery conduit 234 is connected to the first delivery conduit 233. A second delivery regulating valve 236 is provided on the second delivery conduit 234. Gas well 200 also includes blowout preventer 241, production leg 242, and production regulator valve 243. A blowout preventer 241 is provided at the top end of the main pipe 216. One end of production leg 242 is connected to blowout preventer 241. The other end of production branch 242 is connected to tubing production line 212 at a location between eighth valve 208 and tenth valve 210. A production regulating valve 243 is provided on the production branch pipe 242. The natural gas well 200 also includes a production shut-off valve 244, the production shut-off valve 244 being disposed on the production leg 242. Production regulator valve 243 is located between production shut-off valve 244 and blowout preventer 241. Gas well 200 also includes an oil pressure detector 245, oil pressure detector 245 being disposed on production leg 242 between production regulator valve 243 and blowout preventer 241. Gas well 200 also includes a first pressure delivery detector 246, first pressure delivery detector 246 being disposed on tubing production tubing 212 between the ten way valve 210 and the location of connection of production leg 242 to tubing production tubing 212. Gas well 200 also includes a casing pressure detector 247. casing pressure detector 247 is disposed on first delivery conduit 233 between first delivery regulator valve 235 and casing production port 213 a. Gas well 200 also includes a second output pressure detector 248, second output pressure detector 248 being disposed on first delivery conduit 233, and first delivery regulator valve 235 being located between second output pressure detector 248 and casing pressure detector 247. Further, a first delivery regulating valve 235 is provided between the connection position of the second delivery pipe 234 and the first delivery pipe 233 and the casing production port 213 a. The first valve 201, the second valve 202, the third valve 203, the fourth valve 204, the fifth valve 205, the sixth valve 206, the seventh valve 207, the eighth valve 208, the ninth valve 209, the tenth valve 210 and the eleventh valve 211 are all flat plate valves. During normal production, valve number three 203, valve number six 206, valve number eight 208, valve number nine 209 and valve number eleven 211 are closed, and the remaining plate valves are opened. Both the first delivery regulating valve 235 and the second delivery regulating valve 236 are closed. Both the production regulating valve 243 and the production stop valve 244 are opened.
In the subject embodiment, gas well 300 includes a production tree, tubing 331, casing 332, first conveyance conduit 333, second conveyance conduit 334, first conveyance adjustment valve 335, and second conveyance adjustment valve 336. The gas production tree comprises a first valve 301, a second valve 302, a third valve 303, a fourth valve 304, a fifth valve 305, a sixth valve 306, a seventh valve 307, an eighth valve 308, a ninth valve 309, a tenth valve 310, an eleventh valve 311, an oil pipe production pipeline 312, a casing production pipeline 313, an oil pipe blowout pipeline 314, a casing blowout pipeline 315 and a main pipeline 316. Main conduit 316 is connected to the top end of tubing 331. In the direction from bottom to top, the first valve 301, the fourth valve 304, and the seventh valve 307 are provided on the main pipe 316 in this order. Tubing production line 312 is connected at one end to main conduit 316 at a location between valve number four 304 and valve number seven 307. One end of the oil pipe blowout pipeline 314 is connected to the main pipeline 316, and the connection position is located between the fourth valve 304 and the seventh valve 307. In a direction away from the main conduit 316, an eighth valve 308 and a tenth valve 310 are sequentially disposed on the tubing production conduit 312. In the direction away from the main pipe 316, a ninth valve 309 and an eleventh valve 311 are sequentially arranged on the oil pipe blowout pipeline 314. One end of the casing production pipe 313 is connected to the top end of the casing 332, and one end of the casing blowout pipe 315 is connected to the top end of the casing 332. In a direction away from casing 332, valve number two 302 and valve number five 305 are disposed in sequence on casing production tubing 313. In a direction away from the casing 332, the third valve 303 and the sixth valve 306 are sequentially disposed on the casing blowout pipeline 315. The end of casing production conduit 313 remote from casing 332 constitutes casing production port 313 a. One end of the first delivery pipe 333 is connected to the casing producing port 313 a. A first delivery regulating valve 335 is provided on the first delivery conduit 333. One end of the second delivery conduit 334 is connected to the tubing production conduit 312 and the other end of the second delivery conduit 334 is connected to the first delivery conduit 333. A second delivery regulating valve 336 is provided on the second delivery pipe 334. The gas well 300 also includes a blowout preventer 341, a production leg 342, and a production regulator valve 343. Blowout preventers 341 are provided at the top end of the main pipe 316. One end of production leg 342 is connected to blowout preventer 341. The other end of production leg 342 is connected to tubing production tubing 312 at a location between eighth valve 308 and tenth valve 310. A production regulating valve 343 is provided on the production manifold 342. The gas well 300 also includes a production shut-off valve 344, the production shut-off valve 344 being disposed on the production leg 342. Production regulator valve 343 is located between production shut-off valve 344 and blowout preventer 341. The gas well 300 also includes an oil pressure detector 345, the oil pressure detector 345 being disposed on the production leg 342 between the production regulator valve 343 and the blowout preventer 341. The gas well 300 further includes a first pressure delivery detector 346, the first pressure delivery detector 346 being disposed on the tubing production string 312 between the ten way valve 310 and the connection of the production leg 342 to the tubing production string 312. The natural gas well 300 also includes a casing pressure detector 347, the casing pressure detector 347 disposed on the first conveyance pipe 333 between the first conveyance modulation valve 335 and the casing production port 313 a. Gas well 300 further includes a second pressure input detector 348, second pressure input detector 348 disposed on first delivery conduit 333, and first delivery regulator valve 335 positioned between second pressure input detector 348 and casing pressure detector 347. Further, a first conveyance regulating valve 335 is provided between the connection position of the second conveyance pipe 334 and the first conveyance pipe 333 and the casing production port 313 a. The first valve 301, the second valve 302, the third valve 303, the fourth valve 304, the fifth valve 305, the sixth valve 306, the seventh valve 307, the eighth valve 308, the ninth valve 309, the tenth valve 310, and the eleventh valve 311 are all flat plate valves. During normal production, the third valve 303, the sixth valve 306, the eighth valve 308, the ninth valve 309 and the eleventh valve 311 are closed, and the remaining flat valves are opened. Both the first delivery regulator valve 335 and the second delivery regulator valve 336 are closed. Production regulating valve 343 and production stop valve 344 are both open.
In the example embodiment of the present application, the natural gas well 400 includes a production tree, tubing 431, casing 432, first conveyance conduit 433, second conveyance conduit 434, first conveyance regulating valve 435, and second conveyance regulating valve 436. The gas production tree comprises a first valve 401, a second valve 402, a third valve 403, a fourth valve 404, a fifth valve 405, a sixth valve 406, a seventh valve 407, an eighth valve 408, a ninth valve 409, a tenth valve 410, an eleventh valve 411, a tubing production pipeline 412, a casing production pipeline 413, a tubing blowout pipeline 414, a casing blowout pipeline 415 and a main pipeline 416. Main conduit 416 is connected to the top end of oil conduit 431. In the direction from bottom to top, the first valve 401, the fourth valve 404, and the seventh valve 407 are disposed in this order on the main pipe 416. Tubing production line 412 is connected at one end to main conduit 416 at a connection location between valve number four 404 and valve number seven 407. One end of the oil pipe blowout pipeline 414 is connected to the main pipeline 416, and the connection position is located between the fourth valve 404 and the seventh valve 407. In a direction away from main conduit 416, eighth valve 408 and tenth valve 410 are disposed in sequence on tubing production conduit 412. And a ninth valve 409 and an eleventh valve 411 are sequentially arranged on the oil pipe blowout pipeline 414 in the direction away from the main pipeline 416. One end of the casing production conduit 413 is connected to the top end of the casing 432, and one end of the casing blowout conduit 415 is connected to the top end of the casing 432. In a direction away from the casing 432, a second valve 402 and a fifth valve 405 are sequentially disposed on the casing production tubing 413. In a direction away from the casing 432, the valve three 403 and the valve six 406 are sequentially disposed on the casing blowout conduit 415. The end of the casing production conduit 413 remote from the casing 432 constitutes a casing production port 413 a. One end of the first delivery conduit 433 is connected to the casing production port 413 a. The first delivery regulating valve 435 is provided on the first delivery pipe 433. One end of the second delivery conduit 434 is connected to the tubing production conduit 412 and the other end of the second delivery conduit 434 is connected to the first delivery conduit 433. A second delivery regulating valve 436 is provided on the second delivery pipe 434. Gas well 400 also includes blowout preventer 441, production leg 442, and production regulator valve 443. Blowout preventer 441 is disposed at the top end of main conduit 416. One end of production leg 442 is connected to blowout preventer 441. The other end of production manifold 442 is connected to tubing production tubing 412 at a location between eighth valve 408 and tenth valve 410. A production regulating valve 443 is provided on the production manifold 442. The gas well 400 also includes a production shut-off valve 444, the production shut-off valve 444 being disposed on the production leg 442. Production regulating valve 443 is located between production shut-off valve 444 and blowout preventer 441. Gas well 400 also includes an oil pressure detector 445, which oil pressure detector 445 is disposed on production offset 442 and between production regulator valve 443 and blowout preventer 441. The gas well 400 also includes a first delivery pressure detector 446, the first delivery pressure detector 446 being disposed on the tubing production tubing 412 between the tenth valve 410 and the connection of the production leg 442 to the tubing production tubing 412. The natural gas well 400 also includes a casing pressure detector 447, the casing pressure detector 447 being disposed on the first conveyance conduit 433 between the first conveyance modulation valve 435 and the casing production port 413 a. The natural gas well 400 further includes a second pressure input detector 448, the second pressure input detector 448 being disposed on the first feed conduit 433, and a first feed adjustment valve 435 being located between the second pressure input detector 448 and the casing pressure detector 447. Further, a first delivery regulating valve 435 is located between the connection position of the second delivery pipe 434 and the first delivery pipe 433 and the casing production port 413 a. The first valve 401, the second valve 402, the third valve 403, the fourth valve 404, the fifth valve 405, the sixth valve 406, the seventh valve 407, the eighth valve 408, the ninth valve 409, the tenth valve 410 and the eleventh valve 411 are all flat plate valves. During normal production, the third valve 403, the sixth valve 406, the eighth valve 408, the ninth valve 409 and the eleventh valve 411 are closed, and the remaining flat valves are opened. Both the first delivery regulating valve 435 and the second delivery regulating valve 436 are closed. Both the production regulating valve 443 and the production stop valve 444 are opened.
The embodiment provides a well group 010 further comprising a well group conduit 011. The end of the first delivery conduit 133 distal to the casing production port 113a communicates with the well group conduit 011. The end of first delivery conduit 233 remote from casing production port 213a communicates with well group conduit 011. The end of the first delivery conduit 333 distal to the casing production port 313a communicates with the well group conduit 011. The end of the first delivery conduit 433 distal to the casing production port 413a communicates with the well group conduit 011. Well cluster 010 provided by this embodiment further includes a blowout main 012. The oil pipe blowout pipeline 114, the oil pipe blowout pipeline 214, the oil pipe blowout pipeline 314, the oil pipe blowout pipeline 414, the casing blowout pipeline 115, the casing blowout pipeline 215, the casing blowout pipeline 315, and the casing blowout pipeline 415 are all communicated with the blowout main 012.
Several modes of operation of well cluster 010 are described below.
The first mode is as follows: in this embodiment, gas well 100 is a high energy well, i.e., its production flow rate of tubing 131 is greater than the critical liquid carrying flow rate. Gas well 200 is a low energy well, i.e., its tubing 231 has a production flow rate less than the critical liquid carrying flow rate. The gas well 100 has a problem of energy waste during production because the production flow rate is greater than the critical liquid carrying flow rate. In the production process of the natural gas well 200, the problem of increasingly serious bottom hole liquid accumulation exists because the production flow rate is smaller than the critical liquid carrying flow rate. To ameliorate this problem, the first delivery regulation valve 135 and the first delivery regulation valve 235 are opened, and the amount of natural gas in the casing 132 of the natural gas well 100 that enters the casing 432 of the natural gas well 200 is controlled by controlling the opening degrees of the first delivery regulation valve 135 and the first delivery regulation valve 235. The natural gas in the casing 132 of the gas well 100 is reduced so that the production flow of the gas well 100 is reduced. The natural gas in the casing 232 of the gas well 200 increases so that the production flow of the gas well 200 rises. The production flow of the natural gas well 100 is reduced, so that the production flow is closer to the critical liquid carrying flow on the premise of being larger than the critical liquid carrying flow, and the energy waste is reduced. The production flow of the gas well 200 is increased to a level greater than the critical liquid carrying flow, thereby carrying away bottom hole liquid accumulation of the gas well 200. Thus, the full utilization and the effective distribution of energy can be realized.
And a second mode: in this embodiment, gas well 100 is a high energy well, i.e., its production flow rate of tubing 131 is greater than the critical liquid carrying flow rate. Gas well 200 is a low energy well, i.e., its tubing 231 has a production flow rate less than the critical liquid carrying flow rate. Due to the heavy liquid loading of the natural gas well 200, a plug drainage process needs to be implemented. But plunger lift cannot be achieved solely by the energy of the gas well 200 itself. To ameliorate this problem, after the plunger in the gas well 200 descends to the bottom of the well, the first conveyance regulating valve 135 and the first conveyance regulating valve 235 are opened, and the amount of natural gas in the casing 132 of the gas well 100 that enters the casing 432 of the gas well 200 is controlled by controlling the opening degrees of the first conveyance regulating valve 135 and the first conveyance regulating valve 235. The natural gas in the casing 132 of the natural gas well 100 is reduced, so that the production flow of the natural gas well 100 is reduced, the production flow is closer to the critical liquid carrying flow on the premise that the production flow is larger than the critical liquid carrying flow, and the energy waste is reduced. The natural gas entering casing 232 of gas well 200 increases the casing pressure of gas well 200 so that gas well 200 has sufficient energy to lift the ram up to the wellhead to complete ram lift drainage. When the plunger in the gas well 200 is down, the first delivery regulating valve 135 and the first delivery regulating valve 235 are closed. After the plunger in the gas well 200 has descended downhole, the first conveyance regulating valve 135 and the first conveyance regulating valve 235 are opened again, and so on. Casing gas in the high-energy natural gas well enters the casing of the low-energy natural gas well, and the low-energy natural gas well can be helped to complete a plunger discharging and producing process.
And a third mode: in this embodiment, well cluster 010 also includes production manifold 013. Tubing production conduit 112, tubing production conduit 212, tubing production conduit 312, and tubing production conduit 412 are all connected to production manifold 013. The production manifold 013 is connected to a compressor for boosted production. Gas well 100 is a high energy well, i.e., its tubing 131 has a production flow greater than the critical liquid carrying flow. Gas well 200 is a low energy well, i.e., its tubing 231 has a production flow rate less than the critical liquid carrying flow rate. When the natural gas well 200 needs to be shut down due to the implementation of a drainage and production process such as plug drainage, interval opening or blowout prevention, the first delivery regulating valve 135 and the second delivery regulating valve 236 are opened, and the production stop valve 144 is closed. Therefore, casing gas of the natural gas well 100 can enter the oil pipe production pipeline 212 of the natural gas well 200 and enter the compressor through the oil pipe production pipeline 212 of the natural gas well 200, so that pressure loss caused by well closing of the natural gas well 200 is compensated, the air inlet pressure of the compressor is stabilized, the air inlet pressure of the compressor is prevented from being greatly fluctuated, and pressurized mining can be combined with discharging and mining processes such as plunger discharging and mining, interval mining or blowout prevention.
It should be noted that in the present embodiment, the energy amount of the gas well 200 is supplemented by the gas well 100 as an example. In the actual operation process, according to the production flow of each natural gas well, a mode of using one high-energy natural gas well to supplement energy to two or more low-energy natural gas wells, a mode of using two or more high-energy natural gas wells to supplement energy to one low-energy natural gas well, or a mode of using two or more high-energy natural gas wells to supplement energy to two or more low-energy natural gas wells can be adopted.
And a fourth mode: when the single natural gas well needs annulus production, for example, when the natural gas well 300 needs downhole annulus production, the first delivery regulating valve 335 and the second delivery regulating valve 336 are closed and opened, and the production stop valve 344 is closed, so that the annulus production of the natural gas well 300 can be realized.
The above description is only a few examples of the present application and is not intended to limit the present application, and those skilled in the art will appreciate that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A natural gas well, comprising:
gas production trees;
the first conveying pipeline is connected with a sleeve production port of the gas production tree; and
the first conveying regulating valve is arranged on the first conveying pipeline;
one end of the second conveying pipeline is connected with an oil pipe production pipeline of the gas production tree, and the other end of the second conveying pipeline is connected with the first conveying pipeline;
the second conveying regulating valve is arranged on the second conveying pipeline;
wherein the first delivery conduit is configured to communicate with a first delivery conduit of another natural gas well.
2. A natural gas well as defined in claim 1 wherein:
the first conveying regulating valve is positioned between the connecting position of the second conveying pipeline and the first conveying pipeline and the sleeve production opening of the gas production tree.
3. A natural gas well as defined in claim 1 wherein:
the device also comprises a blowout preventer, a production branch pipe and a production regulating valve; the blowout preventer is arranged at the top end of the gas production tree, one section of the production branch pipe is connected with the blowout preventer, and the other end of the production branch pipe is connected with an oil pipe production pipeline of the gas production tree; the production regulating valve is arranged on the production branch pipe.
4. A gas well as set forth in claim 3 wherein:
still including the production stop valve, the production stop valve sets up production branch pipe is last.
5. A gas well as set forth in claim 3 wherein:
still include the oil pressure detector, the oil pressure detector sets up produce on the branch pipe, and be located the production governing valve with between the lubricator.
6. A natural gas well as defined in claim 1 wherein:
the gas production tree further comprises a first pressure transmission detector, and the first pressure transmission detector is arranged on the oil pipe production pipeline of the gas production tree.
7. A natural gas well as defined in claim 1 wherein:
the gas production system further comprises a casing pressure detector, wherein the casing pressure detector is arranged on the first conveying pipeline and is positioned between the first conveying regulating valve and the casing production port of the gas production tree.
8. A natural gas well as defined in claim 1 wherein:
the gas production tree further comprises a second pressure transmission detector, the second pressure transmission detector is arranged on the first conveying pipeline, and the first conveying regulating valve is located between the second pressure transmission detector and the casing production port of the gas production tree.
9. A well cluster, comprising:
a gas well as claimed in any one of claims 1 to 8, and
well group pipelines;
wherein the first conveying pipelines of the natural gas wells are all communicated with the well group pipelines.
10. The well group of claim 9, wherein:
all the natural gas wells are located on the same platform.
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| CN202010360576.4A CN111364948A (en) | 2020-04-30 | 2020-04-30 | Natural gas well and well group |
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| CN202010360576.4A CN111364948A (en) | 2020-04-30 | 2020-04-30 | Natural gas well and well group |
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