CN204082061U

CN204082061U - Fracture used high-pressure sand-proof hydraulic anchor

Info

Publication number: CN204082061U
Application number: CN201420475726.6U
Authority: CN
Inventors: 顾明祥; 董乔云; 许祥红
Original assignee: YANCHENG XINYUAN PETROCHEMICAL MACHINERY CO Ltd
Current assignee: YANCHENG XINYUAN PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2014-08-21
Filing date: 2014-08-21
Publication date: 2015-01-07
Anticipated expiration: 2024-08-21

Abstract

The utility model discloses fracture used high-pressure sand-proof hydraulic anchor, comprise anchor body (1), anchor mechanism (2), sand control mechanism (3), liquid displacement mechanism (4), described anchor body (1) carries and is connected to anchor mechanism (2), sand control mechanism (3), liquid displacement mechanism (4), on the excircle of described anchor body (1), uniform three anchor fluke holes (11) are one group of anchor fluke hole vertically, radially uniform three groups; The interval in three groups of axial anchor fluke holes on the external cylindrical surface of described anchor body (1), has three uniform fan-shaped fracturing fluid discharge capacity grooves (41) vertically from top to bottom.The utility model adds sand prevention ring, slotted sand control liner in inside, prevents sand from entering the place such as anchor fluke and sealing ring and causes anchor fluke to lose efficacy; Anchor body has fan-shaped fracturing fluid discharge capacity groove, adds fracturing fluid discharge capacity, greatly improve the efficiency of fracturing; And improve in anchor fluke production technology, anchor fluke grappling success rate is greatly improved.

Description

Fracture used high-pressure sand-proof hydraulic anchor

Technical field

The utility model belongs to technical field of petroleum extraction, particularly a kind of fracture used high-pressure sand-proof hydraulic anchor.

Background technology

In order to improve seepage area and the coefficient of mining of low-permeability oil deposit, fracturing technique is one of very effective means.Along with carrying out in a deep going way of oilfield exploitation fracturing technique, the tubing string of fracturing technology requires more and more higher, and in order to prevent, down-hole pressure is too high to be caused fracturing string to be wriggled and bend, and must fix down-hole string with hydraulic anchor.

Tradition hydraulic anchor does not mostly have sand control mechanism, even if there is sand-proof pipe, there is design parameters unreasonable thus cause grappling to be lost efficacy yet.Conventional hydraulic anchor outside does not have fracturing fluid discharge capacity groove in addition, just reduces of the fracturing fluid discharge capacity.

Need to design the high pressure sand-proof hydraulic anchor that can adapt to deep well fracturing needs for this reason.

Summary of the invention

Goal of the invention: develop and a kind ofly can adapt to deep well fracturing needs and there is the high pressure sand-proof hydraulic anchor of sand-proof function.

Technical scheme: fracture used high-pressure sand-proof hydraulic anchor, comprise anchor body 1, anchor mechanism 2, sand control mechanism 3, liquid displacement mechanism 4, described anchor body 1 carries and is connected described anchor mechanism 2, sand control mechanism 3, liquid displacement mechanism 4, and described anchor mechanism 2 comprises anchor fluke 21, pressing plate 22, inner spring 23, outer spring 24, O type circle 25; Described sand control mechanism 3 comprises sand prevention ring 31, slot sand-proof pipe 32, and described liquid displacement mechanism 4 is fracturing fluid discharge capacity groove 41;

Described sand prevention ring 31 embeds in the anti-sand launder of anchor body 1, and slot sand-proof pipe 32 to be connected with anchor body 1 by screw thread and to tighten, and other end cylindrical blocks sand prevention ring 31; On the excircle of described anchor body 1, uniform three anchor fluke holes 11 are one group of anchor fluke hole vertically, radially uniform three groups; The interval in three groups of axial anchor fluke holes on the external cylindrical surface of described anchor body 1, has three uniform fan-shaped fracturing fluid discharge capacity grooves 41 vertically from top to bottom; The anchor fluke 21 of the described O of being embedded with type circle 25 is contained in three groups of axial anchor fluke holes 11, described three groups of inner springs 23, outer spring 24 are placed in the spring eye of described anchor fluke 21, described pressing plate 22 pushes down inner spring 23, outer spring 24, and described pressing plate 22 is fixed by trip bolt 26 with anchor body 1;

Described sand prevention ring 31, slot sand-proof pipe 32 cause anchor fluke to lose efficacy for preventing sand from entering the places such as anchor fluke 1, O type circle 25, sand prevention circle 31; Described fracturing fluid discharge capacity groove 41, for increasing fracturing fluid discharge capacity, improves the efficiency of fracturing greatly.

Operating principle: when applying hydraulic pressure in oil pipe, anchor fluke is Compress Spring under High Pressure, and is pushed to internal surface of sleeve pipe, be stuck on internal surface of sleeve pipe, pressure is higher, and clamping force is larger, the end thrust produced when overcoming operation with this, plays the effect of fixing down-hole string.After bleeding off pressure, under the elastic force effect of spring, anchor fluke reclaims.

The beneficial effects of the utility model: the utility model one adds sand prevention ring, slotted sand control liner in inside, prevent sand from entering the place such as anchor fluke and sealing ring and cause anchor fluke to lose efficacy; Two is on anchor body, have fan-shaped fracturing fluid discharge capacity groove, adds fracturing fluid discharge capacity, greatly improves the efficiency of fracturing; Three is improve in anchor fluke production technology, and anchor fluke grappling success rate is greatly improved.

Accompanying drawing explanation

Fig. 1 is the utility model assembly structure schematic diagram;

Fig. 2 is A-A generalized section in Fig. 1;

Fig. 3 is the utility model anchor body structure schematic diagram;

Fig. 4 is B-B generalized section in Fig. 3.

Detailed description of the invention

In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.

Shown in Fig. 1, Fig. 2, fracture used high-pressure sand-proof hydraulic anchor, comprise anchor body 1, anchor mechanism 2, sand control mechanism 3, liquid displacement mechanism 4, described anchor body 1 carries and is connected described anchor mechanism 2, sand control mechanism 3, liquid displacement mechanism 4, and described anchor mechanism 2 comprises anchor fluke 21, pressing plate 22, inner spring 23, outer spring 24, O type circle 25; Described sand control mechanism 3 comprises sand prevention ring 31, slot sand-proof pipe 32, and described liquid displacement mechanism 4 is fracturing fluid discharge capacity groove 41;

Described sand prevention ring 31 embeds in the anti-sand launder of anchor body 1, and slot sand-proof pipe 32 to be connected with anchor body 1 by screw thread and to tighten, and other end cylindrical blocks sand prevention ring 31; On the excircle of described anchor body 1, uniform three anchor fluke holes 11 are one group of anchor fluke hole vertically, radially uniform three groups; The interval in three groups of axial anchor fluke holes on the external cylindrical surface of described anchor body 1, has three uniform fan-shaped fracturing fluid discharge capacity grooves 41 (as shown in Figure 3, Figure 4) vertically from top to bottom; The anchor fluke 21 of the described O of being embedded with type circle 25 is contained in three groups of axial anchor fluke holes 11, described three groups of inner springs 23, outer spring 24 are placed in the spring eye of described anchor fluke 21, described pressing plate 22 pushes down inner spring 23, outer spring 24, and described pressing plate 22 is fixed by trip bolt 26 with anchor body 1;

The foregoing is only preferred embodiments of the present utility model, not in order to limit the utility model, any amendment done within spirit of the present utility model and principle, equivalent replacement, improvement etc., all should be included within system architecture of the present utility model.

Claims

1. fracture used high-pressure sand-proof hydraulic anchor, comprise anchor body (1), anchor mechanism (2), sand control mechanism (3), liquid displacement mechanism (4), described anchor body (1) carries and is connected to anchor mechanism (2), sand control mechanism (3), liquid displacement mechanism (4), it is characterized in that

Described anchor mechanism (2) comprises anchor fluke (21), pressing plate (22), inner spring (23), outer spring (24), O type circle (25); Described sand control mechanism (3) comprises sand prevention ring (31), slot sand-proof pipe (32), and described liquid displacement mechanism (4) is fracturing fluid discharge capacity groove (41); Described sand prevention ring (31) embeds in the anti-sand launder of anchor body (1), and described slot sand-proof pipe (32) to be connected with anchor body (1) by screw thread and to tighten, and other end cylindrical blocks described sand prevention ring (31); On the excircle of described anchor body (1), uniform three anchor fluke holes (11) are one group of anchor fluke hole vertically, radially uniform three groups; The interval in three groups of axial anchor fluke holes on the external cylindrical surface of described anchor body (1), has three uniform fan-shaped fracturing fluid discharge capacity grooves (41) vertically from top to bottom.

2. fracture used high-pressure sand-proof hydraulic anchor according to claim 1, is characterized in that,

The anchor fluke (21) of the described O of being embedded with type circle (25) is contained in three groups of axial anchor fluke holes (11), described three groups of inner springs (23), outer spring (24) are placed in the spring eye of described anchor fluke (21), described pressing plate (22) pushes down inner spring (23), outer spring (24), and described pressing plate (22) is fixed by trip bolt (26) with anchor body (1).