Separate conveying device

Abstract

The utility model discloses a distribution device and relates to the technical field of oilfield ternary injection. One side of the manifold is provided with a row of shunting conveying holes, and the manifold is provided with an opening adjusting valve on the outer side of each shunting conveying hole; the opening adjusting valve comprises a valve pipe, a flange is arranged on the right side of the valve pipe, a sealing gasket is clamped between the left side of the valve pipe and the manifold, the manifold and the valve pipe are connected together through a bolt, and the bolt penetrates through the flange and then is in threaded connection with the manifold. The utility model has the beneficial effects that when the pressure on the right side of the valve pipe is increased, namely the pressure difference between the injection pressure and the formation pressure is reduced, namely the pressure difference between the two sides of the valve head is reduced, the change of the pressure difference enables the compression degree of the compression spring to be reduced, the valve head moves towards the left side, and the annular overflowing sectional area between the conical hole and the conical head is increased; namely, when the formation pressure is increased and the pressure difference between the formation and the injection pump is reduced, the opening adjusting valve expands the overflowing area, and the injection flow is kept basically unchanged.

Description

Technical Field

[0001] This utility model relates to the field of ternary injection technology in oil fields, and in particular to a distribution device. Background Technology

[0002] Ternary polymer injection technology has been widely used in oilfields. In the polymer injection process, the one-pump-multi-well injection process involves one injection pump injecting polymer into multiple wellheads simultaneously. One injection pump delivers polymer to the pipelines of each injection well through a manifold. This process can reduce investment in equipment and process pipelines. However, the problem with this process is that the formation pressure at each wellhead is not the same, or there are fluctuations in formation pressure. Wellheads with higher formation pressure inject less polymer, while wellheads with lower pressure inject more polymer. The injection volume delivered by each wellhead is uneven, which affects the oil displacement effect. Utility Model Content

[0003] To address the problem of uneven injection flow rates in various wells during the current multi-well injection process using a single pump, this invention provides a distribution device.

[0004] The technical solution provided by this utility model is: a distribution device, including a manifold, a row of diversion and conveying holes opened on one side of the manifold, and an opening adjustment valve installed on the outside of each diversion and conveying hole of the manifold.

[0005] The opening control valve includes a valve tube with a flange on the right side and a gasket sandwiched between the valve tube and the manifold on the left side. The manifold and the valve tube are connected together by bolts, and the bolts pass through the flange and are threaded onto the manifold.

[0006] There is a conical hole in the inner cavity on the right side of the valve tube. The diameter of the conical hole is enlarged to the left. The valve tube is equipped with a valve head on the left side of the conical hole. The right side of the valve head is a conical head structure. The conical head has the same taper as the conical hole. There is a countersunk hole on the left side of the valve head. The guide shaft is connected to the countersunk hole with clearance fit. The guide shaft is fixedly connected to the left side of the flow plate A. The flow plate A is threaded to the valve tube. The flow plate A has a flow hole A that runs through the left and right sides.

[0007] The valve tube has a support shaft on the right side of the conical head. The right side of the support shaft is fixedly connected to the flow plate B, which is threaded onto the valve tube. The flow plate B has a through-hole B on both sides. A compression spring is provided between the flow plate B and the conical head.

[0008] When installed, the conical head does not contact the conical hole.

[0009] The valve tube and valve head are made of stainless steel.

[0010] The beneficial effects of this utility model are as follows: When the pressure on the right side of the valve pipe increases, that is, the pressure difference between the injection pressure and the formation pressure decreases, which means the pressure difference between the two sides of the valve head decreases. The change in pressure difference reduces the compression of the compression spring, and the valve head moves to the left. The annular flow cross-sectional area between the conical hole and the conical head increases. That is, when the formation pressure increases, the pressure difference between the formation and the injection pump decreases. The opening regulating valve expands the flow area to keep the injection flow rate basically constant. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Appendix Figure 2 This is a schematic diagram of the opening degree regulating valve in this utility model.

[0013] In the diagram, 1-manifold, 2-diversion conveying hole, 3-opening regulating valve, 4-sealing gasket, 5-bolt, 6-valve pipe, 7-valve head, 8-guide shaft, 9-support shaft, 10-conical head, 11-conical hole, 12-flow plate A, 13-counterhead, 14-flow plate B, 15-flange, 16-compression spring, 17-flow hole A, 18-flow hole B. Detailed Implementation

[0014] like Figures 1-2 As shown, a distribution device includes a manifold 1, with a row of diversion and conveying holes 2 on one side of the manifold 1, and an opening adjustment valve 3 installed on the outside of each diversion and conveying hole 2 in the manifold 1.

[0015] The opening regulating valve 3 includes a valve pipe 6, a flange 15 on the right side of the valve pipe 6, a sealing gasket 4 between the left side of the valve pipe 6 and the manifold 1, and the manifold 1 and the valve pipe 6 are connected together by bolts 5. The bolts 5 pass through the flange 15 and are threaded onto the manifold 1.

[0016] There is a conical hole 11 in the inner cavity on the right side of the valve tube 6. The diameter of the conical hole 11 is enlarged to the left. The valve tube 6 is provided with a valve head 7 on the left side of the conical hole 11. The right side of the valve head 7 is a conical head 10 structure. The conical head 10 has the same taper as the conical hole 11. A countersunk hole 13 is opened on the left side of the valve head 7. A guide shaft 8 is connected in the countersunk hole 13 with clearance fit. The guide shaft 8 is used to guide the valve head 7. A flow plate A12 is fixedly connected to the left side of the guide shaft 8. The flow plate A12 is threaded to the valve tube 6. A flow hole A17 is opened on the flow plate A12 that runs through the left and right sides.

[0017] The valve tube 6 is provided with a support shaft 9 on the right side of the conical head 10. The support shaft 9 is fixedly connected to the flow plate B14 on the right side. The flow plate B14 is threaded onto the valve tube 6. The flow plate B14 has a flow hole B18 that runs through the left and right sides. A compression spring 16 is provided between the flow plate B14 and the conical head 10.

[0018] If the pressure difference between the two sides of a flow area increases, the flow rate will inevitably increase. If the flow rate is to remain constant, the flow area needs to be reduced, and vice versa. This invention works based on this principle.

[0019] Manifold 1 is connected to the outlet of the injection pump, and each opening regulating valve 3 is connected to each injection well. The pressure of the injection pump is higher than the formation pressure, and there is a pressure difference between the two. When the formation pressure at the inlet of one of the injection wells increases, that is, the pressure difference between the left and right sides of valve 6 decreases, the injection flow rate of that injection well will decrease if no adjustment is made.

[0020] When the pressure on the right side of valve pipe 6 increases, that is, the pressure difference between the injection pressure and the formation pressure decreases, which means the pressure difference between the two sides of valve head 7 decreases. The change in pressure difference causes the compression spring 16 to be compressed less, and valve head 7 moves to the left. The annular flow cross-sectional area between conical orifice 11 and conical head 10 increases. That is, when the formation pressure increases, the pressure difference between the formation and the injection pump decreases. The opening regulating valve 3 expands the flow area to keep the injection flow rate basically constant.

[0021] In the installed state, the conical head 10 and the conical hole 11 are not in contact.

[0022] Valve tube 6 and valve head 7 are made of stainless steel.

Claims

1. A distribution device, comprising a manifold (1), characterized in that: A row of diversion conveying holes (2) is opened on one side of the manifold (1), and an opening adjustment valve (3) is installed on the outside of each diversion conveying hole (2) of the manifold (1); The opening regulating valve (3) includes a valve pipe (6), a flange (15) is provided on the right side of the valve pipe (6), a sealing gasket (4) is sandwiched between the left side of the valve pipe (6) and the manifold (1), and the manifold (1) and the valve pipe (6) are connected together by bolts (5). The bolts (5) pass through the flange (15) and are threaded onto the manifold (1). The valve tube (6) has a conical hole (11) on the right side of its inner cavity. The conical hole (11) is enlarged to the left. The valve tube (6) has a valve head (7) on the left side of the conical hole (11). The valve head (7) has a conical head (10) structure on the right side. The conical head (10) has the same taper as the conical hole (11). The valve head (7) has a countersunk hole (13) on the left side. The countersunk hole (13) is connected to the guide shaft (8) with clearance fit. The guide shaft (8) is fixedly connected to the flow plate A (12) on the left side. The flow plate A (12) is threaded onto the valve tube (6). The flow plate A (12) has a flow hole A (17) that runs through the left and right sides. The valve tube (6) is provided with a support shaft (9) on the right side of the conical head (10). The support shaft (9) is fixedly connected to the right side of the flow plate B (14). The flow plate B (14) is threaded onto the valve tube (6). The flow plate B (14) has a flow hole B (18) that runs through the left and right sides. A compression spring (16) is provided between the flow plate B (14) and the conical head (10).

2. The distribution device according to claim 1, characterized in that: In the installed state, the conical head (10) and the conical hole (11) are not in contact.

3. A distribution device according to claim 1, characterized in that: The valve tube (6) and valve head (7) are made of stainless steel.

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