Eccentric water distributor with adjustable water nozzle design for underground water injection

Abstract

The utility model discloses an eccentric water distributor with an adjustable water nozzle for underground water injection, which is provided with a main body, a filling seal, an eccentric water distributor shell cover plate, a gasket, a power supply and an eccentric water distributor shell, the main body is mainly divided into three layers, and the adjustable water nozzle, an electric push rod and a CPU (central processing unit) are sequentially arranged from bottom to top; a main runner, a branch runner, a power supply box, a main body groove and a cover plate groove are arranged in the eccentric water distributor shell; the filling seal is the seal between the main body and the main body groove of the eccentric water distributor shell; the eccentric water distributor shell cover plate covers the main body part and is matched with the cover plate groove of the eccentric water distributor shell; the gasket is placed between the eccentric water distributor shell cover plate and the cover plate groove, and the eccentric water distributor shell cover plate and the gasket are tightened through the bolt. And the power supply provides energy for the CPU and the electric push rod and is arranged in the power supply box. The eccentric water distributor solves the problems that the throwing and fishing strength of the eccentric water distributor is large and the opening of the water nozzle is fixed.

Description

Technical Field

[0001] The utility model relates to the water injection stage in the process of oilfield exploitation, in particular to an eccentric water distributor with an adjustable downhole water nozzle design. Background Technique

[0002] There is a water injection stage in the process of oilfield exploitation. Oilfield water injection is to make up for the underground void caused in the process of oilfield exploitation and increase the oil production efficiency. However, generally, there are multiple oil layers in an oilfield, and the required water injection volume for each oil layer is also different. In order to achieve fine layered water injection, the water distributor is particularly important. Oilfield water injection has gone through several stages, such as general water injection, concentric integrated water injection, bridge-type eccentric water injection, intelligent water injection, etc. At present, the oilfield mainly uses bridge-type eccentric water injection, supplemented by other water injection modes, that is, during the water injection stage, an eccentric water distributor that needs to be fished is mostly used. Since the opening of the water injection nozzle of the eccentric water distributor is fixed, it is necessary to continuously fish the plug in the water distributor to change the size of the nozzle and conduct trial water injection until the water injection volume reaches the requirement, resulting in a large labor intensity for fishing. The utility model has made improvements and innovations in view of the problems of the fishing intensity of the eccentric water distributor and the fixed opening of the nozzle. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] To solve the problems of large fishing intensity of the plug in the above-mentioned eccentric water distributor and the fixed opening of the nozzle. The utility model provides an eccentric water distributor with an embedded main body whose water nozzle opening can be remotely adjusted by a program.

[0005] (2) Technical Solutions

[0006] The technical solution adopted by the utility model is: an eccentric water distributor with an adjustable downhole water nozzle design, which has a main body, a filling seal, an eccentric water distributor outer shell cover plate, a gasket, a power supply, and an eccentric water distributor outer shell. The main body mainly includes three major parts, which are, from bottom to top, an adjustable water nozzle, an electric push rod, and a CPU. The main body is divided into three layers in total, and each of the three major parts occupies one layer. There are baffles between each layer. The main body cover plate on the topmost layer is tightened by screws. There is a sealing ring on the bottom baffle between the adjustable water nozzle and the electric push rod. The adjustable water nozzle and the electric push rod are connected by a pin; inside the eccentric water distributor outer shell, there are a main flow channel, a branch flow channel, a power supply box, a main body groove, and a cover plate groove; the filling seal is a seal filled between the main body and the main body groove of the eccentric water distributor outer shell; the eccentric water distributor outer shell cover plate covers the main body part and cooperates with the cover plate groove of the eccentric water distributor outer shell; the gasket is placed between the eccentric water distributor outer shell cover plate and the cover plate groove, and the eccentric water distributor outer shell cover plate and the gasket are tightened by bolts. The power supply provides energy for the CPU and the electric push rod and is placed in the power supply box.

[0007] Preferably, the adjustable water nozzle consists of a valve sleeve and a valve core. The valve used is a cone valve, that is, the top of the valve core is a conical surface. The overall appearance of the valve sleeve is a cuboid. There is a water inlet at the bottom of the valve sleeve opposite to the flow dividing channel of the water distributor housing, and there is a water outlet on the side facing the side of the eccentric water distributor housing cover plate.

[0008] Preferably, the filling seal, gasket, and eccentric water distributor housing cover plate all have holes at the relative position of the water outlet.

[0009] (3) Beneficial effects

[0010] The main body of the present utility model is embedded in the eccentric water distributor housing, and no traditional plug is used, eliminating the need for fishing. The main body contains an adjustable water nozzle, an electric push rod, and a CPU. The CPU gives commands remotely to control the up and down movement of the push rod in the electric push rod. The push rod drives the valve core to move up and down, thereby changing the size of the flow-through area, that is, the opening degree of the water nozzle. The power supply is used to provide power to the CPU and the electric push rod. The present utility model effectively solves the problems of large fishing intensity of the eccentric water distributor and fixed opening degree of the water nozzle. Description of the drawings

[0011] Figure 1 is the overall assembly drawing of the eccentric water distributor with an adjustable water nozzle for downhole water injection designed by the present utility model.

[0012] Figure 2 is the part drawing of the eccentric water distributor housing of the eccentric water distributor with an adjustable water nozzle for downhole water injection designed by the present utility model.

[0013] Figure 3 is the main assembly drawing of the eccentric water distributor with an adjustable water nozzle for downhole water injection designed by the present utility model.

[0014] Figure 4 is the part drawing of the eccentric water distributor housing cover plate of the eccentric water distributor with an adjustable water nozzle for downhole water injection designed by the present utility model.

[0015] Figure 5 is the part drawing of the gasket of the eccentric water distributor with an adjustable water nozzle for downhole water injection designed by the present utility model.

[0016] In the figure: 1 eccentric water distributor housing, 2 power supply, 3 bolt, 4 eccentric water distributor housing cover plate, 5 gasket, 6 main body, 7 filling seal, 11 main flow channel, 12 flow dividing channel, 13 main body groove, 14 power supply box, 15 cover plate groove, 61 main body cover plate, 62 screw, 63 CPU, 64 top layer baffle, 65 electric push rod, 66 bottom layer baffle, 67 sealing ring, 68 pin, 69 valve core, 610 valve sleeve, 611 water inlet, 612 water outlet. Specific implementation manners

[0017] The present utility model will be further described below in conjunction with the drawings and implementation manners.

[0018] As Figure 1 、 Figure 2 and Figure 3 shown, an eccentric water distributor with an adjustable downhole water injection nozzle design includes a main body 6, a packing seal 7, an eccentric water distributor housing cover plate 4, a gasket 5, a power supply 2, and an eccentric water distributor housing 1. The main body 6 mainly includes three major parts, which are, from bottom to top, an adjustable water nozzle, an electric push rod 65, and a CPU 63. The main body is divided into three layers in total, with each of the three major parts occupying one layer, and each layer is separated by a baffle. The top-layer main body cover plate 61 is tightened by screws. A sealing ring 67 is provided on the bottom baffle 66 between the adjustable water nozzle and the electric push rod. The adjustable water nozzle and the electric push rod 65 are connected by a pin 68. Inside the eccentric water distributor housing 1, there are a main flow channel 11, a branch flow channel 12, a power supply box 14, a main body groove 13, and a cover plate groove 15. The packing seal 7 is a seal filled between the main body and the main body groove of the eccentric water distributor housing. The eccentric water distributor housing cover plate 4 covers the main body part and cooperates with the cover plate groove of the eccentric water distributor housing. The gasket 5 is placed between the eccentric water distributor housing cover plate 4 and the cover plate groove 15, and the eccentric water distributor housing cover plate 4 and the gasket 5 are tightened by bolts 3. The power supply 2 provides energy for the CPU 63 and the electric push rod 65 and is placed in the power supply box 14. The adjustable water nozzle is composed of a valve sleeve 610 and a valve core 69. The valve used is a cone valve, that is, the top of the valve core 69 is a conical surface. The overall appearance of the valve sleeve 610 is a cuboid. There is a water inlet 611 at the bottom of the valve sleeve 610 opposite to the branch flow channel 12 of the water distributor housing, and a water outlet 612 on the side facing the eccentric water distributor housing cover plate 4.

[0019] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the overall assembly process of the eccentric water distributor with the adjustable downhole water injection nozzle design is as follows: First, assemble the main body 6. From bottom to top, first insert the sealing ring 67 into the bottom baffle 66, then pass the push rod of the electric push rod 65 through the sealing ring 67 and the bottom baffle 66, then connect the valve core 69 and the electric push rod 65 with a pin 68, then install the assembled part into the valve sleeve 610, then install the top baffle 64, then install the CPU 63, and finally tighten the main body cover plate 61 on the valve sleeve 610 with four screws 62. After assembling the main body 6, put the packing seal 7 on the main body 6 to enhance the sealing performance, then insert it into the main body groove 13 on the eccentric water distributor housing 1. At the same time, install the power supply 2 into the power supply box 14, then put the gasket 5 into the cover plate groove 15, and finally tighten the eccentric water distributor housing cover plate 4 and the gasket 5 with twelve bolts 3 together with the eccentric water distributor housing 1.

[0020] During use, taking pressure pulse communication as an example, when injecting water in oilfield exploitation, there is a water distribution room on the ground. There is a water distribution valve in the water distribution room that can change the water flow rate. When the water flow rate is changed, a pressure pulse can be generated. A pressure transmitter is used to collect and identify the pressure pulse signal and convert it into a command signal to be sent to the CPU 63. The CPU 63 controls the electric push rod 65, and the push rod drives the valve core 69 to move up and down, thereby changing the flow area between the valve sleeve 610 and the valve core 69, that is, the size of the water nozzle opening. After the size of the water nozzle is changed, the injected water flow passes through the main flow channel 11 of the eccentric water distributor housing 1 and enters the main body 6 from the shunt channel 12. At this time, the filling seal 7 outside the main body 6 and the internal sealing ring 67 play a sealing role to prevent the water flow from entering the power supply 2, the CPU 63 and the electric push rod 65. Finally, by remotely adjusting the size of the water nozzle opening, the effect of changing the water injection volume is achieved, saving the trouble of fishing and retrieving, and the water nozzle opening can also be remotely adjusted.

Claims

1. An eccentric water distributor with an adjustable water nozzle for underground water injection, comprising a main body, a filling seal, an eccentric water distributor housing cover, a gasket, a power supply, and an eccentric water distributor housing, characterized in that: The main body mainly includes three parts, which are an adjustable faucet, an electric push rod and a CPU from bottom to top. The main body is divided into three layers in total, and each of the three parts occupies one layer. Each layer is separated by a baffle. The topmost main body cover is tightened by screws. A sealing ring is provided on the bottom baffle between the adjustable faucet and the electric push rod. The adjustable faucet and the electric push rod are connected with a pin; the inside of the eccentric water distributor shell is provided with a main flow channel, a branch flow channel, a power box, a main body groove and a cover plate groove; the filling seal is a seal filled between the main body and the main body groove of the eccentric water distributor shell; the eccentric water distributor shell cover covers the main part and cooperates with the cover plate groove of the eccentric water distributor shell; the gasket is placed between the eccentric water distributor shell cover and the cover plate groove, and the eccentric water distributor shell cover and the gasket are tightened by bolts; the power supply provides energy for the CPU and the electric push rod and is placed in the power box.

2. The eccentric water distributor with adjustable water nozzle for downhole water injection according to claim 1 is characterized by: The adjustable water nozzle is composed of a valve sleeve and a valve core. The valve used is a cone valve, that is, the top of the valve core is a cone surface, and the overall appearance of the valve sleeve is a rectangular parallelepiped. There is a water inlet on the bottom of the valve sleeve opposite to the diversion channel of the water distributor shell, and a water outlet on the side facing the side of the eccentric water distributor shell cover.

3. The eccentric water distributor with adjustable water nozzle for downhole water injection according to claim 1 is characterized by: The filling seal, the gasket and the cover plate of the eccentric water distributor housing are all provided with holes at positions opposite to the water outlet.

Images