Injection-production dual-purpose string structure
A pipe string and dual-purpose technology, applied in the field of dual-purpose pipe string structure for injection and mining, can solve the problems of inconvenient transportation, heavy weight, and long plug, and achieve the effects of reducing weight, shortening length, and improving flexibility of use.
Active Publication Date: 2022-03-29
PETROCHINA CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a dual-purpose injection-production string structure to solve the problem of long plunger plunger and heavy weight of the injection-production dual-purpose pump in the prior art, which leads to inconvenient transportation
Method used
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[0026] The dual-purpose tubular pump for injection and production in the prior art adopts such as Figure 7 In the long plunger injection-production pump shown, the pump gas injection port 24' is directly set at the position corresponding to the casing 15' and the plunger 20', and the upper end of the plunger 20' connects with the sucker rod through the oil outlet joint 16'. connection, when the sucker rod reciprocates, the floating valve ball 17' blocks or avoids the pump suction port 23' under the action of the liquid pressure difference, so that the oil passes through the pump suction port 23' and is pumped into the sucker rod middle. During the gas injection operation, the staff needs to push down the plunger 20' to avoid the pump gas injection port 24'. Because the plunger 20' of the injection-production dual-purpose tubular pump in the prior art is long in length, heavy in weight, and difficult to process, it has high cost, is difficult to transport, and is difficult to...
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The invention provides a dual-purpose pipe string structure for injection and production, including: a tubular pump, the tubular pump includes a casing and a plunger, and the plunger is movably arranged in the casing to suck fluid; an air injection valve, an injection valve The air valve includes a first cylinder and a sealing structure, the first cylinder is detachably arranged on the casing, the first cylinder is provided with a first gas injection hole, the sealing structure is movably arranged in the first cylinder, and the sealing The structure has a closed position that blocks the first gas injection hole and an open position that avoids the first gas injection hole; the first sucker rod is penetrated in the first cylinder and connected with the plunger, and the first sucker rod can drive the plunger in the At the same time, the first sucker rod can drive the sealing structure to move between the closed position and the open position. The technical scheme of the present invention effectively solves the problem of long plunger injection-production dual-purpose pump plunger in the prior art, which is long and heavy and thus inconvenient to transport.
Description
technical field [0001] The invention relates to the field of oil field exploitation, in particular to an injection-production dual-purpose pipe string structure. Background technique [0002] Xinjiang and Liaohe are rich in heavy oil resources. Steam injection and oil pumping operations are required in heavy oil steam huffing and SAGD production. Injection production pumps have been widely used in the field due to their advantages of steam injection and pumping without snubbing. Through investigation, it is found that the injection-production pumps used in the oil field mainly include long plunger injection-production dual-purpose pumps, feedback pumps and thermal recovery rod pumps. At present, these injection-production pumps have the following problems: (1) Long plunger injection-production dual-purpose pumps have long plunger length, heavy weight, difficult processing, high cost, inconvenient transportation, and pump barrel knots during steam injection when used for long...
Claims
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IPC IPC(8): E21B43/24E21B34/12
CPCE21B43/24E21B43/2406E21B34/12
Inventor 黄晓东姚满仓孟胡雷德荣张辉陈瑞祥陈璐迪力夏提·吐尔逊巴克·海肉拉龙小梁
Owner PETROCHINA CO LTD