A horizontal well layout device for tight sandstone reservoirs

Abstract

A horizontal well layout device for a dense sandstone reservoir. The device mainly solves the problem that the drilling and layout work of the existing horizontal well layout device for a dense sandstone reservoir is inconvenient to operate. The device is characterized in that: a second base (2) is fixed on one side of the first base (1), a driving device (4) is fixed on the first base (1), a drill bit (5) is connected to the driving device (4), and a fixing seat (17) that can be adjusted up and down is connected to the second base (2). The horizontal well layout device for a dense sandstone reservoir adopts an integrated structure, which makes the drilling and layout work more convenient, and the overall adaptability of the device is strong.

Description

Technical Field

[0001] The present invention relates to the field of oil field production, in particular to a horizontal well arrangement device for dense sandstone oil reservoirs. Background Art

[0002] A horizontal well refers to a water collection structure for pumping (injecting) fluids in which the filter tube of the permeable section (air permeable section) of the well is placed horizontally. This type of well has several important characteristics: 1. The flow of water to the horizontal well has a large vertical component velocity; 2. The permeable section of the well has a large contact area with the aquifer; 3. The surface outlet of the well can avoid permanent surface obstacles (airplane runways, rivers, roads, and buildings, etc.); 4. When the thickness of the aquifer is very small, a horizontal well with a very long permeable section can also be installed. In practical applications, the above characteristics of horizontal wells make it much more superior than vertical wells in many fields. Generally speaking, horizontal wells greatly increase the contact area between water collection structures and the gas in the unsaturated zone of groundwater and underground oil and gas, and effectively improve the extraction efficiency of fluids.

[0003] At present, the existing horizontal well layout devices for tight sandstone oil reservoirs lack a good integrated structural design in actual use. The actual horizontal well drilling and layout work in tight sandstone oil reservoirs need to be carried out separately, which is inconvenient to operate. Summary of the invention

[0004] In order to overcome the problem that the existing horizontal well layout device for tight sandstone oil reservoirs is inconvenient to operate during drilling and layout operations, the present invention provides a horizontal well layout device for tight sandstone oil reservoirs. The horizontal well layout device for tight sandstone oil reservoirs adopts an integrated structure, which makes drilling and layout operations more convenient and has strong overall adaptability of the device.

[0005] The technical solution of the present invention is: a horizontal well layout device for a tight sandstone oil reservoir, comprising a first base, a second base is fixed on one side of the first base, a driving device is fixed on the first base, a drill bit is connected to the driving device, and a fixing base that can be adjusted up and down is connected to the second base.

[0006] A vertical mounting groove is provided on the second base, an intermittent gear is connected to the mounting groove through a horizontal rotating shaft, the intermittent gear is meshed with the rack, the upper end of the rack passes through the mounting groove and is connected to a liftable connecting plate, the bottom of the rack is connected to a fixed seat, and a spring is provided between the fixed seat and the bottom surface of the second base.

[0007] The connecting plate is connected to the top of the second base through a telescopic rod; the bottom of the second base is connected to the mounting plate, the rack passes through the mounting plate, and the upper end of the spring is fixed below the mounting plate.

[0008] There are two fixing seats, which are respectively connected to the mounting seats through rotating shafts, and the mounting seats are connected to the lower end of the rack.

[0009] The driving device is fixed on the first base through a mounting frame, the driving device is connected to the rotating device through a driving shaft, and the bottom of the rotating device is connected to a drill bit.

[0010] Two supports are fixed at the bottom of the first base, and mounting holes are opened on the supports.

[0011] The present invention has the following beneficial effects: due to the adoption of the above-mentioned scheme, one side of the well layout device is a drilling mechanism, and the other side is a layout mechanism, and the two are combined into one, making it more convenient to actually carry out horizontal well drilling and layout work in tight sandstone oil reservoirs; and the layout device can automatically adjust the height according to the on-site conditions, thereby improving the overall adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0014] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0015] Figure 4 yes Figure 1 Enlarged view of point C in the middle.

[0016] In the figure, 1-first base, 2-second base, 3-mounting frame, 4-driving device, 5-driving shaft, 6-rotating device, 7-drill bit, 8-support, 9-mounting groove, 10-intermittent gear, 11-rack, 12-mounting plate, 13-spring, 14-mounting seat, 15-rotating shaft, 16-connecting rod, 17-fixed seat, 18-connecting plate, 19-telescopic rod. Implementation

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] Depend on Figures 1 to 4 As shown, a horizontal well layout device for a dense sandstone reservoir includes a first base 1, a second base 2 is fixed on one side of the first base 1, and the bottom surfaces of the two bases are flush. A mounting frame 3 is fixed on the upper part of the first base 1, and a driving device 4 is fixed on the mounting frame 3. The driving device 4 can be a motor. The driving shaft 5 of the driving device 4 passes through the through groove on the first base 1 and is connected to a rotating device 6. The rotating device 6 is connected to a drill bit 7. After the driving device 4 is started, it can drive the drill bit 7 to drill. The rotating device 6 can adjust the drilling direction of the drill bit 7 so that it can drill a straight well or an inclined well. Two symmetrical supports 8 are fixed to the bottom of the first base 1, and mounting holes are opened on the supports 8. The supports 8 cooperate with the fixing parts to fix the first base 1 to the ground.

[0019] The second base 2 is provided with a vertical mounting groove 9, and telescopic rods 19 are fixed on both sides of the mounting groove 9 above the second base 2. The upper ends of the two telescopic rods 19 are fixed with a connecting plate 18. Since the telescopic rods 19 can be extended and retracted up and down, the connecting plate 18 can be freely lifted and lowered. A horizontal rotating shaft is provided in the mounting groove 9, and an intermittent gear 10 is connected to the rotating shaft, and the intermittent gear 10 is meshed with a rack 11. A mounting plate 12 is fixed to the bottom of the second base 2 at the mounting groove 9, and a through groove is provided on the mounting plate 12 corresponding to the rack 11. The rack 11 passes through the mounting groove 9 and the through groove on the mounting plate 12. The upper end of the rack 11 is fixed to the connecting plate 18, and the lower end is fixed to the mounting seat 14. A spring 13 is provided on the outside of the rack 11, and the spring 13 is located between the mounting plate 12 and the mounting seat 14, and the two ends of the spring 13 are respectively fixed to the mounting plate 12 and the mounting seat 14. Rotating the intermittent gear 10 can drive the rack 11 to descend and adjust, while stretching the spring 13. When the rack 11 needs to return to its original position, the intermittent gear 10 can be rotated so that its toothless end rotates to the rack 11, the intermittent gear 10 and the rack 11 are disengaged, and the rack 11 is reset under the elastic force of the spring 13.

[0020] The mounting seat 14 is connected to two rotating shafts 15, and each rotating shaft 15 is connected to a fixing seat 17 through a connecting rod 16. The two fixing seats 17 are rotatable and can adjust the angle according to the needs of the on-site environment, and have strong adaptability. A plurality of reinforcement blocks are arranged between the side of the connecting rod 16 and the upper plane of the fixing seat 17, which can increase the stability of the fixing seat 17. The fixing seat 17 is provided with a plurality of mounting holes, which can be used in conjunction with the fixing parts to install the horizontal well arrangement mechanism of the dense sandstone reservoir to be arranged.

[0021] When the well arrangement device is working, the device is first fixed to the ground by the support 8 on the first base 1, and then fixed to a suitable position by the fixing seat 17 on the second base 2. Since the height of the fixing seat 17 is adjustable, it can adapt to different site conditions. The well arrangement device combines the horizontal well drilling mechanism and the arrangement mechanism into one, making the operation more convenient, and the arrangement device can automatically adjust the height according to the site conditions, and has strong adaptability.

Claims

1. A horizontal well arrangement device for a tight sandstone reservoir, comprising a first base (1), characterized in that: A second base (2) is fixed on one side of the first base (1), and a vertical mounting groove (9) is provided on the second base (2). An intermittent gear (10) is connected to the mounting groove (9) via a horizontal rotating shaft, and the intermittent gear (10) is meshed with a rack (11). The upper end of the rack (11) passes through the mounting groove (9) and is connected to a liftable connecting plate (18). A mounting seat (14) is fixed on the bottom of the rack (11), and two rotating shafts (15) are connected to the mounting seat (14). Each rotating shaft (15) is connected to a fixed seat (17) via a connecting rod (16). The two fixed seats (17) are rotatable and are used to adjust the angle according to the needs of the on-site environment. A plurality of reinforcing blocks are provided between the side surface of the connecting rod (16) and the upper plane of the fixed seat (17), and a plurality of first mounting holes are provided on the fixed seat (17); The connecting plate (18) is connected to the top of the second base (2) via a telescopic rod (19); the bottom of the second base (2) is connected to the mounting plate (12); the rack (11) passes through the mounting plate (12); a spring (13) is provided outside the rack (11); the spring (13) is located between the mounting plate (12) and the mounting seat (14); and two ends of the spring (13) are respectively fixed to the mounting plate (12) and the mounting seat (14); A driving device (4) is fixed on the first base (1), the driving device (4) is fixed on the first base (1) via a mounting frame (3), the driving device (4) is connected to a rotating device (6) via a driving shaft (5), the bottom of the rotating device (6) is connected to a drill bit (7), and the rotating device (6) is used to adjust the drilling direction of the drill bit (7); two supports (8) are fixed on the bottom of the first base (1), and a second mounting hole is opened on the support (8), and the support (8) cooperates with a fixing piece to fix the first base (1) on the ground.

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