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An oil well pump and sand control technology, which is applied in the direction of pumps, pump components, variable displacement pump components, etc., can solve problems such as side leakage, ball valve closing lag, and valve balls that cannot be seated in the center, so as to reduce sand jams and improve reliability , a wide range of effects
Pending Publication Date: 2020-04-07
CSIC ZHONGNAN EQUIP
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[0005] The main purpose of the present invention is to provide an inclined well sand control oil well pump to solve the problem that when the inclined well pumping cannot prevent sand burial and the wel...
Method used
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Embodiment 1
[0031] like Figure 1~3 As shown, an inclined well sand control oil well pump includes a plunger assembly and a pump barrel assembly. The pump barrel assembly includes a bridge pipe 4, an intermediate collar 6 and a double-way joint 7. There is a pump The barrel extension barrel 5 forms a sandy annulus between the pump barrel extension barrel 5 and the bridge pipe 4. The pump barrel extension barrel 5 is provided with a short pump barrel 3 at the upper end, and the short pump barrel 3 is connected to the long plunger 13 in a sliding and sealed manner. . From this structure, such as figure 1 As shown, when the sand in the upper oil pipe of the oil well pump falls on the upper oil outlet valve cover 10, it will slide down along the upper conical surface of the upper oil outlet valve cover 10 into the annular grit chambers on both sides, instead of directly falling into the In the upper outlet valve cover 10 or in the mating surface between the pump cylinder and the long plunge...
Embodiment 2
[0043] Further illustrate in conjunction with embodiment 1, as Figure 1~3 As shown, the pump barrel assembly consists of an upper collar 1, a support ring 2, a short pump barrel 3, a bridge pipe 4, a pump barrel extension barrel 5, an intermediate collar 6, a double-way joint 7, a sanding tailpipe 8, a plug Head 9, stop block 17, the 3rd spring 18, stop pin 19, oil inlet valve ball 20, oil inlet valve cover 21 form.
[0044] The plunger assembly consists of an upper oil outlet valve cover 10, a first spring 11, an upper oil outlet valve ball 12, a long plunger 13, a lower oil outlet valve cover 14, a second spring 15, and a lower oil outlet valve ball 16
[0045] When going into the well, first connect the upper end of the pump barrel assembly with the coupling 1 to the tubing, and run it into the oil well at the designed position along with the tubing string, and then connect the upper end of the plunger assembly to the sucker rod, and with the sucker rod string Go down int...
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Abstract
The invention discloses an inclined shaft sand prevention oil well pump. The inclined shaft sand prevention oil well pump comprises a plunger assembly and a pump cylinder assembly, a pump cylinder comprises a gap bridge pipe, a middle coupling and a two-way connector, a pump cylinder lengthening cylinder is arranged in the pump cylinder assembly, a sand setting annulus is formed between the pump cylinder lengthening cylinder and the gap bridge pipe, a short pump cylinder is arranged at the upper end of the pump cylinder lengthening cylinder, the short pump cylinder and a long plunger are in sliding seal, an oil inlet valve cover is arranged in the middle coupling, the oil inlet valve cover and the two-way connector form a sand falling annulus, a check block is arranged above the oil inletvalve cover, the outer circumferential ring of the check block is a conical surface structure, when sand grains in the pump cavity are deposited downwards, the sand can slide into a sand falling annulus space on the outer side of the oil inlet valve cover along the outer conical surface of the stop block, when sand grains in an oil pipe on the upper portion of the oil well pump fall onto the upperoil outlet valve cover, the sand grains can slide into the annular sand setting annulus space on the two sides along the upper conical surface of the upper oil outlet valve cover and cannot directlyfall into the upper oil outlet valve cover or the matching surface between the pump cylinder and the long plunger, so that the phenomenon that the sand grains enter the pump to cause sand blocking ordeposit on the valve cover to cause sand burying is reduced.
Description
technical field [0001] The invention relates to the field of oil well pumps, in particular to a sand control oil well pump for inclined wells. Background technique [0002] At present, many pumping wells in domestic oilfields are highly deviated wells and horizontal wells with large sand content. When the inclined well pump is used for mining, sand particles often enter the pump and cause sand stuck and sand buried. Even in the lower part of the pump After hanging sand control tools such as sand control screens, more sand particles still enter the pump, resulting in reduced pump efficiency and shortened pump inspection cycle; while sand control oil well pumps can solve problems such as sand jams and sand burials, but cannot adapt In inclined wells, the seat of the ball valve is not correct, the closing lag, and side leakage often occur, which leads to low pump efficiency and even no oil output. Therefore, it is necessary to adopt an inclined well sand control pump with a mo...
Claims
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Application Information
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