CN210141120U

CN210141120U - Oil well fracturing string

Info

Publication number: CN210141120U
Application number: CN201920628863.1U
Authority: CN
Inventors: 李涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-03-13
Anticipated expiration: 2029-05-05

Abstract

The utility model relates to an oil well fracturing string, including pipe box, row send pipe and check valve, be equipped with row in the pipe box and send the pipe, the top sets up the check valve in the pipe box, arrange and send the pipe top and cup joint first hydraulic anchor, first packer is cup jointed to first hydraulic anchor bottom, bottom erection joint ball valve seat, the sliding sleeve is cup jointed at ball valve seat top, the second hydraulic anchor is cup jointed at the sliding sleeve top, second hydraulic anchor top sets up the second packer, cup joint installation level pressure sand blower between second packer and the first packer. The exploitation efficiency and the safety of the crude oil exploitation work are effectively improved.

Description

Oil well fracturing string

Technical Field

The utility model relates to an oil well fracturing technical field, concretely relates to oil well fracturing tubular column.

Background

Traditional oil well fracturing work is generally single-layer fracturing, and its fracturing efficiency is lower, influences the exploitation of crude oil, and does not have good protection machanism, and when fracturing work, its fracturing fluid discharge port all uses same inlet port with the crude oil export for exploitation work efficiency is lower, for this reason, we provide an oil well fracturing tubular column.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcome at least one kind of defect among the prior art, provide an oil well fracturing string, through the use of first hydraulic anchor, first packer, second hydraulic anchor and second packer, can effectively divide into two sections hydrojet mouths in the pipe box, and through the setting of the ball valve seat for the shutoff, fracturing fluid effectively forms first section pressure layer in the pipe box bottom, keep off personnel through the shutoff ball after the ball valve seat shutoff, through forming second section pressure layer in second packer and first packer, the circulation slotted hole is convenient for discharge fracturing fluid outwards, through the seting up of the mouth of pipe, the personnel of being convenient for effectively separate bin outlet and liquid feeding mouth, the personnel of being convenient for directly connect collection raw materials equipment with the pipe box top, and the installation check valve can effectively prevent the unexpected a large amount of backward flows of mortar in the well in the pipe box, the row of check valve send the hole can slow down the upward backward flow speed of discharging of mortar, avoid the intraductal pressure intensity too high to produce the blowout well, improve the security that the pipe box used, can effectively solve the problem in the background art.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

the utility model provides an oil well fracturing string, includes pipe box, row's pipeline and check valve, be equipped with row's pipeline in the pipe box, the top sets up the check valve in the pipe box, first hydraulic anchor is cup jointed at row's pipeline top, first packer is cup jointed to first hydraulic anchor bottom, ball disk seat is connected in the bottom erection, the sliding sleeve is cup jointed at ball disk seat top, the second hydraulic anchor is cup jointed at the sliding sleeve top, second hydraulic anchor top sets up the second packer, cup joint the installation level pressure sand blaster between second packer and the first packer.

Furthermore, the check valve is installed on the pipe sleeve through a bolt, and a discharge hole is formed in a blade of the check valve.

Furthermore, a pipe inlet corresponding to the discharge pipe is formed in the top end of one side of the pipe sleeve, and the pipe inlet is provided with a sealing cover.

Furthermore, circulation slotted holes are formed in two sides of the bottom end of the pipe sleeve.

Further, a stainless steel layer is arranged in the pipe sleeve, an aluminum oxide layer is plated on the surface of the stainless steel layer, and a copper plating layer is plated on the inner surface of the stainless steel layer.

Compared with the prior art, the utility model discloses following beneficial effect has: the fracturing fluid can be effectively segmented into two sections of fluid jet ports in the pipe sleeve by using the ball valve seat, the fracturing fluid effectively forms a first section of pressure layer at the bottom end of the pipe sleeve by arranging the ball valve seat for plugging, after a person blocks the ball valve seat through the plugging ball, a second section of pressure layer is formed by the second packer and the first packer, the fracturing fluid is conveniently discharged outside through the flow groove hole, the effects of throttling, pressure guiding and flow guiding can be effectively carried out in the pipe sleeve by using the constant pressure sand jet, when fluid passes through the constant pressure sand jet, the constant pressure sand jet can effectively throttle the fluid, the sand settling phenomenon generated in the first section of pressure layer (the second hydraulic anchor and the second packer area) is effectively avoided, the effective sand fluid enters a required target layer, and the pipe inlet is opened, the personnel of being convenient for effectively part the bin outlet with send the liquid mouth, and the personnel of being convenient for will collect former materials equipment and pipe box top lug connection, and install the check valve in the pipe box and can effectively prevent the unexpected a large amount of refluxes of mortar in the well, and the row of check valve send the hole and can slow down the mortar and upwards flow back exhaust speed, avoids intraductal pressure intensity too high to produce and spouts the well, improves the security that the pipe box used.

Drawings

Fig. 1 is the utility model discloses an oil well fracturing string's inside profile structure sketch map.

Fig. 2 is the utility model discloses a pipeline corrosion structure schematic diagram of oil well fracturing string.

Figure 3 is the utility model relates to a pipeline material layer schematic diagram of oil well fracturing string.

In the figure: 1. a pipeline; 2. discharging the pipes; 3. a first hydraulic anchor; 4. a first packer; 5. a ball valve seat; 6. a sliding sleeve; 7. a second hydraulic anchor; 8. a second packer; 9. a constant pressure sand blower; 11. a one-way valve; 12. a discharge hole; 13. a stainless steel layer; 14. plating a copper layer; 15. an aluminum oxide layer; 16. a flow through slot; 17. an inlet pipe orifice.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-3, an oil well fracturing string, including pipe box 1, delivery pipe 2 and check valve 11, be equipped with delivery pipe 2 in the pipe box 1, the top sets up check valve 11 in the pipe box 1, delivery pipe 2 top cup joints first hydraulic anchor 3, first packer 4 is cup jointed to first hydraulic anchor 3 bottom, bottom erection joint ball disk seat 5, sliding sleeve 6 is cup jointed at ball disk seat 5 top, second hydraulic anchor 7 is cup jointed at sliding sleeve 6 top, second hydraulic anchor 7 top sets up second packer 8, cup joint installation constant pressure sand jet 9 between second packer 8 and the first packer 4.

The check valve 11 is mounted on the pipe sleeve 1 through a bolt, and a discharge hole 12 is formed in a blade of the check valve 11. In this embodiment, as shown in fig. 1 and 2, the check valve 11 is installed in the pipe sleeve 1 to effectively prevent a large amount of mortar from flowing back in a burst manner in the well, the discharge hole 12 of the check valve 11 can slow down the upward flowing and discharging speed of the mortar, so that a well blowout caused by an excessively high pressure in the pipe is avoided, and the use safety of the pipe sleeve 1 is improved.

Wherein, the top end of one side of the pipe sleeve 1 is provided with a pipe inlet 17 corresponding to the discharge pipe 2, and the pipe inlet 17 is provided with a sealing cover. In this embodiment, as shown in fig. 1, the pipe inlet 17 is convenient for personnel to feed the discharge pipe 2 into the pipe sleeve 1.

Wherein, both sides of the bottom end of the pipe sleeve 1 are provided with circulation slotted holes 16. In this embodiment, as shown in fig. 1, the flow slot 16 facilitates the liquid sand material in the pipe sleeve 1 to enter the oil layer, so that the oil layer is cracked, and the permeability of the oil layer is improved.

Wherein, the pipe sleeve 1 is internally provided with a stainless steel layer 13, the surface of the stainless steel layer 13 is plated with an alumina layer 15, and the inner surface of the stainless steel layer 13 is plated with a copper plating layer 14. In the embodiment, as shown in fig. 3, the copper plating layer 14 can improve the corrosion resistance and wear resistance of the inner surface of the pipe sleeve 1, and the aluminum oxide layer 15 can provide a good oxidation resistance effect on the outer surface of the pipe sleeve 1.

It should be noted that the utility model relates to an oil well fracturing string, in operation, personnel send fracturing fluid to the bottom of pipe box 1 through the drainage pipe 2, realize the fracturing fluid to the bottom of pipe box 1 through ball valve seat 5, through the use of first hydraulic anchor 3, first packer 4, second hydraulic anchor 7 and second packer 8, can effectively segment the interior of pipe box 1 into two sections of hydrojet ports, and through the setting of ball valve seat 5 for plugging, fracturing fluid effectively forms a first section of pressure layer at the bottom of pipe box 1, after blocking personnel plugged ball valve seat 5 through the ball, through forming a second section of pressure layer at second packer 8 and first packer 4, circulation slotted hole 16 is convenient for discharge fracturing fluid to the outside, can effectively throttle, lead pressure and water conservancy diversion effects to the interior of pipe box 1 through the use of constant pressure sand ejector 9, when fluid passes through constant pressure sand ejector 9, constant pressure sand ejector 9 can effectively throttle it, and effectively avoid first section pressure zone to produce the sand setting phenomenon, effectively take the sand liquid to get into required target layer, through the seting up of mouth of pipe 17, the personnel of being convenient for effectively part the bin outlet with send the liquid mouth, the personnel of being convenient for will collect raw materials equipment and 1 top lug connection of pipe box, and installation check valve 11 can effectively prevent the unexpected a large amount of backward flows of mortar in the well, the row of check valve 11 send hole 12 can slow down the speed that the mortar upwards flows back and discharges, avoid intraductal pressure intensity too high to produce the blowout well, the security that improves pipe box 1 and use.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an oil well fracturing string, includes pipe box (1), discharge pipe (2) and check valve (11), its characterized in that: be equipped with drainage pipe (2) in pipe box (1), the top sets up check valve (11) in pipe box (1), drainage pipe (2) top is cup jointed first hydraulic anchor (3), first hydraulic anchor (3) bottom cup joints first packer (4), bottom erection joint ball disk seat (5), sliding sleeve (6) is cup jointed at ball disk seat (5) top, second hydraulic anchor (7) is cup jointed at sliding sleeve (6) top, second hydraulic anchor (7) top sets up second packer (8), cup joint installation level pressure sand ejector (9) between second packer (8) and first packer (4).

2. A well fracturing string as claimed in claim 1, wherein: the check valve (11) is mounted on the pipe sleeve (1) through bolts, and the blades of the check valve (11) are provided with discharge holes (12).

3. A well fracturing string as claimed in claim 1, wherein: the top end of one side of the pipe sleeve (1) is provided with a pipe inlet (17) corresponding to the discharge pipe (2), and the pipe inlet (17) is provided with a sealing cover.

4. A well fracturing string as claimed in claim 1, wherein: both sides of the bottom end of the pipe sleeve (1) are provided with circulation slotted holes (16).

5. A well fracturing string as claimed in claim 1, wherein: the pipe sleeve (1) is internally provided with a stainless steel layer (13), the surface of the stainless steel layer (13) is plated with an alumina layer (15), and the inner surface of the stainless steel layer (13) is plated with a copper plating layer (14).