CN106089172B - Full bore hydraulic fracturing process large displacement - Google Patents

Full bore hydraulic fracturing process large displacement Download PDF

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Publication number
CN106089172B
CN106089172B CN201610402303.5A CN201610402303A CN106089172B CN 106089172 B CN106089172 B CN 106089172B CN 201610402303 A CN201610402303 A CN 201610402303A CN 106089172 B CN106089172 B CN 106089172B
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pressure
layer
packer
fracturing
full
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CN201610402303.5A
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CN106089172A (en
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张永平
王金友
唐鹏飞
李琳
张晓川
张洋
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中国石油天然气股份有限公司
大庆油田有限责任公司
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Abstract

本发明涉及油田采油工程技术领域,属于种液压式全通径大排量压裂工艺。 The present invention relates to the field of oilfield engineering, species belonging to the full bore hydraulic fracturing process large displacement. 本发明有效解决了现有压裂工艺存在通径小,施工排量低的问题。 The present invention effectively solves the problems of small diameter, low displacement problems of the prior construction fracturing process. 本发明首先将扩张式压裂封隔器(5)、导压喷砂器(4)和多个全通径导压喷砂封隔器(3)与油管(2)连接下入套管(1)预置深度;打压,液压通过封隔器(3)和导压喷砂器(4)的导压通道,使封隔器坐封;继续加液压对第层进行压裂;加压,进入第二层导压通道,使第二层全通径导压喷砂封隔器(3)中可变径环(6)收缩;投球到第二层,提高液压打开第二层全通径导压喷砂封隔器(3)的滑套,即可对第二层进行压裂;使用同规格球进行第三层到第n层的压裂施工。 The present invention is a fracturing first expandable packer (5), blasting pressure guide (4) and a plurality of full-bore packer pressure guiding sand (3) and the tube (2) into the connecting sleeve ( 1) preset depth; pressure, through hydraulic packer (3) blasting and pressure guiding (4) the pilot pressure passage, packer packer; the first layer continues to increase hydraulic fracturing; pressure, pilot pressure passage into the second layer, the second layer of full-bore packer pressure guiding sand (3) may be adjustable ring (6) shrinkage; pitch to the second layer, the second layer to improve the hydraulic open full bore sandblasting pressure guiding packers (3) of the sleeve, to the second layer of fractured; balls use the same specification fracturing the third layer to the n layer. 本发明具有压裂施工排量大,安全、高效等优点。 Fracturing the present invention having a large displacement, safe, efficient and so on.

Description

液压式全通径大排量压裂工艺 Full bore hydraulic fracturing process large displacement

技术领域 FIELD

[0001] 本发明涉及油田采油工程技术领域,属于一种液压式全通径大排量压裂工艺。 [0001] The present invention relates to the field of oilfield engineering, belongs to the full bore hydraulic fracturing process large displacement.

背景技术 Background technique

[0002] 大庆油田进入开发后期,外围低渗透扶杨油层开发时,其砂体主要是河流相沉积, 并以窄条带、断续条带河道砂为主,砂体规模小,不连续。 [0002] Daqing Oilfield advanced stage of development, when the peripheral low permeability of Fuyang reservoir development, its sand is mainly fluvial facies, and with narrow strips, intermittent strips of river sand-based, small-scale sand, not continuous. 目前管柱普通采用阶梯式滑套结构,喷砂器滑套通径逐级减小(通径为4> 25- 4> 40),产生节流效应,摩阻大,近36%的能量损失在管柱的节流上,限制了排量的提升。 Currently column commonly employed stepped sleeve structure, sandblasting sleeve diameter decreases stepwise (diameter 4> 25-4> 40), throttling effect is generated, a large friction, nearly 36% of the energy loss in the column on the throttle, limiting the lifting displacement. 因此研制了液压式全通径大排量压裂工艺,通过全新设计全通径大排量多层压裂管柱,使多级喷砂器通径相同,实现大通道(通径大于50mm)〇 Thus developed full bore hydraulic fracturing process large displacement, by the new design full bore large displacement multilayer fracturing string, so that the same multi-stage diameter sandblasting, to achieve a large channel (diameter greater than 50mm) 〇

发明内容 SUMMARY

[0003] ^发明的目的就是发明一种在大通道条件下,产生的缩径节流减小,可有效降低摩阻,提高施工排量,以满足低渗透储层大规模缝网压裂施工的液压式全通径大排量压裂工艺。 [0003] ^ object of the invention is to invent a channel condition at large, is reduced to produce a reduced diameter orifice, can effectively reduce friction, improve operational displacement to meet the low permeability reservoir fracturing massive fracture network the full bore hydraulic fracturing process large displacement.

[0004]本发明是通过以下装置来实现的:该装置由套管、油管、全通径导压喷砂封隔器、 导压喷砂器、扩张式压裂封隔器及可变径环组成;其中可变径环嵌在全通径导压喷砂封隔器中,油管置于套管中,油管从下至上依次连接扩张式压裂封隔器、导压喷砂器和多个全通径导压喷砂封隔器;液压式全通径大排量压裂工艺是通过以下步骤来实现的: [0004] The present invention is achieved by the following apparatus: The apparatus consists of casing, tubing, full-bore packer pressure guiding sand, sand blast pilot pressure, expanding and fracturing packer rings may be adjustable ; wherein the ring may be embedded in the adjustable pressure guiding sand full bore packer, the tubing is placed in the casing, tubing is connected from the bottom to top expandable packer fracturing, sand and a plurality of pressure guiding full-bore packer pressure guiding sand; full bore hydraulic fracturing process a large displacement is achieved by the following steps:

[0005] a、首先将扩张式压裂封隔器、导压喷砂器和多个全通径导压喷砂封隔器与油管连接并下入套管预置深度; [0005] a, the first expandable packer fracturing, sand and a plurality of pressure guiding full-bore packer pressure guiding sand and the tubing connector into the sleeve and the preset depth;

[0006] b、地面高压液向油管内打液压,液压通过全通径导压喷砂封隔器和导压喷砂器的导压通道,由全通径导压喷砂封隔器和导压喷砂器的喷砂口产生节流压差,使全通径导压喷砂封隔器和扩张式压裂封隔器全部坐封,实现目的层封隔; [0006] b, hit the ground pressure fluid into the hydraulic hose, the hydraulic pilot pressure through full-bore packer and sand blasting pressure guiding channel's pilot pressure, packer pressure guiding by a full bore blasting and guide blasting sand blasting pressure to produce a throttle pressure port, so that full-bore packer pressure guiding sand and expanding all fracturing packer packer, packer achieve the object layer;

[0007] c、继续加液压对第一层直接进行压裂施工; [0007] c, continue to increase the hydraulic fracturing of a first layer directly;

[0008] d、再提高液压,高压液体进入第二层全通径导压喷砂封隔器球座导压通道,使第二层全通径导压喷砂封隔器中可变径环收缩,为第二层压裂做好投球打滑套准备; [0008] d, and then increase the hydraulic pressure, the high pressure liquid into the second layer of full-bore packer pressure guiding blasting pressure passage guiding the ball seat, the second layer of full-bore packer pressure guiding sand may be adjustable ring shrinkage, fracture of the second layer do pitch sets slip preparation;

[0009] e、井口投压裂球,下入第二层,压裂球落入第二层全通径导压喷砂封隔器的可变径环后,提高液压打开第二层全通径导压喷砂封隔器的滑套,第二层压裂通道开启,即可对第二层进行压裂施工; After [0009] e, fracturing wellhead cast ball, into the second layer, the second layer of fractured ball into full-bore packer pressure guiding sand may be adjustable ring opening of the second layer to improve the hydraulic allpass blasting pressure guiding sleeve diameter packer, fracturing the second layer channel opening, to a second layer of fracturing;

[0010] f、重复de步骤,使用同一规格压裂球能够进行第三层到第n层多段压裂。 [0010] f, de repeated steps, using the same specifications of the ball can be fractured to the n-th layer a third layer multistage fracturing.

[0011]本发明与已有技术相比具有如下优点: [0011] The prior art and the present invention has the following advantages:

[0012]本发明滑套和封隔器进行一体化设计,整套管柱为全通径设计,球座尺寸相同,投同一种规格尺寸球可打开压裂管柱中所有滑套,滑套没有级差限制,满足大排量、无限级压裂施工,是一种安全、高效、环保的直井压裂技术。 [0012] The present invention packer sleeve and integrated design, the entire column is full-bore design, the same size ball seat, the same size ball size cast openable sleeve fracturing string of all, there is no sleeve differential limit, to meet the large displacement, unlimited level fracturing is a safe, efficient and environmentally friendly vertical well fracturing technology.

[0013]附图说明:图1为本发明的现场应用示意图。 [0013] BRIEF DESCRIPTION OF DRAWINGS: FIG. 1 field applications of the present invention. FIG. ^丨4」共件头她力&式:以下结合附图对本发明作进—步祥述:本发明是通过以下装置来实现的:该装置由套管1、油管2、全通径导压喷砂封隔器3、导压喷砂器4、扩张式压裂封隔器5及可变径环6组成;其中可变径环6嵌在全通径导压喷砂封隔器3中,油管2置于套管i中1",油管2从下至上依次连接扩张式压裂封隔器5、导压喷砂器4和多个全通径导压喷砂封隔'3. 液压式全通径大排量压裂工艺是通过以下步骤来实现的: , ^ Shu 4 "common items on her head force & amp; formula: below in conjunction with the accompanying drawings of the present invention will progress - further Xiang said: The present invention is achieved by the following means: the device by the sleeve 1, pipe 2, full-bore guide 3 packer pressure blasting, blasting pressure guiding device 4, expanding the fracturing packer 5 and 6 may be adjustable ring; wherein adjustable ring 6 may be embedded in the full-bore packer pressure guiding sand 3 , the tubing 2 is placed in the casing 1 i '2 from bottom to top tubing connector expanding the fracturing packer 5, 4 and a plurality of full-bore pressure guiding pilot pressure sandblasting sand packer' 3. full bore hydraulic fracturing process a large displacement is achieved by the following steps:,

[0015] a、首先将扩张式压裂封隔器5、导压喷砂器4和两个全通径导压喷砂封隔器3与管2连接并下入套管1预置深度; [0015] a, the first expandable packer 5 fracturing, sand blasting pressure guiding path 4 and two full blast pressure guiding 3 is connected to the packer and the tube 2 into the casing 1 at a preset depth;

[0016] b、地面高压液向油管2内打液压,液压通过全通径导压喷砂封隔器3和导压喷砂器4的导压通道,由全通径导压喷砂封隔器3和导压喷砂器4的喷砂口产生节流压差,使全通径导压喷砂封隔器3和扩张式压裂封隔器5全部坐封,实现目的层封隔; 1 [0016] b, hit the ground pressure fluid into the hydraulic tubing 2, through a full bore hydraulic pressure guiding sand packer 3 and pilot pressure control blasting pressure guiding passage 4, a full-bore pressure guiding blast barrier seal 3 and 4 blasting sand blasting pressure guiding the throttle opening to generate a pressure differential, the pressure guiding path so that the entire blasting packer 3 and expanding packer fracturing packer 5 all achieve the object of the zonal isolation; 1

[0017] c、继续加液压对第一层直接进行压裂施工; [0017] c, continue to increase the hydraulic fracturing of a first layer directly;

[0018] d、再提高液压,高压液体进入第二层全通径导压喷砂封隔器3球座导压通道,使第二层全通径导压喷砂封隔器3中可变径环6收缩,为第二层压裂做好投球打滑套准备; [0018] d, and then increase the hydraulic pressure, the high pressure liquid into the second layer, the full bore pressure guiding sand packer pressure passage guiding the ball seat 3, the second layer of sand full-bore packer pilot pressure variable 3 contracted diameter ring 6, the second layer is a cover slip preparation pitching well fracturing;

[0019] e、井口投压裂球,下入第二层,压裂球落入第二层全通径导压喷砂封隔器3的可变径环6后,提高液压打开第二层全通径导压喷砂封隔器3的滑套,第二层压裂通道开启,gp可对第二层进行压裂施工; [0019] e, fracturing the cast ball wellhead, into the second layer, the second layer of fractured ball into full-bore packer blasting pressure guiding ring 3 can be adjustable 6, opening the second layer to improve the hydraulic full-bore packer pressure guiding sand sliding sleeve 3, a second layer of fractured channel opening, on the second layer may be GP fracturing;

[0020] f、重复de步骤,使用同一规格压裂球进行第三层压裂。 [0020] f, de repeated steps, using the same specifications of the third layer fracturing fracturing balls.

Claims (1)

1.液压式全通径大排量压裂工艺,该工艺是通过以下装置来实现的:该装置由套管(1)、油管(2)、全通径导压喷砂封隔器(3)、导压喷砂器(4)、扩张式压裂封隔器(5)及可变径环⑹组成;其中可变径环⑹嵌在全通径导压喷砂封隔器⑶中,油管⑵置于套管(1)中, 油管(2)从下至上依次连接扩张式压裂封隔器(5)、导压喷砂器(4)和多个全通径导压喷砂封隔器(3);其特征在于:液压式全通径大排量压裂工艺是通过以下步骤来实现的: a、 首先将扩张式压裂封隔器(5)、导压喷砂器(4)和多个全通径导压喷砂封隔器(3)与油管(2)连接并下入套管(1)预置深度; b、 地面高压液向油管(2)内打液压,液压通过全通径导压喷砂封隔器(3)和导压喷砂器(4)的导压通道,由全通径导压喷砂封隔器(3)和导压喷砂器(4)的喷砂口产生节流压差,使全通径导压喷砂封隔器(3)和扩张式压裂封隔器(5)全部 1. The full bore hydraulic fracturing large displacement process, which is achieved by the following means: the device by the sleeve (1), tubing (2), full-bore packer pressure guiding sand (3 ), blasting pressure guide (4), expanding the fracturing packer (5) and may be adjustable ring ⑹ composition; wherein the adjustable ring fitted ⑹ full-bore packer pressure guiding ⑶ in sand, ⑵ tubing disposed sleeve (1), the tube (2) connected successively expanding the fracturing packer (5) from bottom to top, blasting pressure guide (4) and a plurality of full bore sealing pressure guide blasting compartment (3); characterized in that: full bore hydraulic fracturing process a large displacement is achieved by the following steps: a, fracturing first expandable packer (5), sandblasting pilot pressure ( 4) and a plurality of full-bore packer pressure guiding sand (3) and the tube (2) and the connection into the sleeve (1) preset depth; the tubing (hydraulic play 2) B, high-pressure liquid surface, full bore hydraulic pressure by the pressure guiding sand packers (3) blasting and pressure guiding (4) the pilot pressure passage, a full-bore packer pressure guiding sand (3) and the pilot pressure sandblasting ( 4) generating a throttle opening blast pressure, the pressure guiding path so that the entire blasting packers (3) expanding and fracturing packer (5) all 坐封,实现目的层封隔; c、 继续加液压对第一层直接进行压裂施工; d、 再提高液压,高压液体进入第二层全通径导压喷砂封隔器(3)球座导压通道,使第二层全通径导压喷砂封隔器(3)中可变径环(6)收缩,为第二层压裂做好投球打滑套准备; e、 井口投压裂球,下入第二层,压裂球落入第二层全通径导压喷砂封隔器(3)的可变径环(6)后,提高液压打开第二层全通径导压喷砂封隔器(3)的滑套,第二层压裂通道开启,即可对第二层进行压裂施工; f、 重复de步骤,使用同一规格压裂球进行第三层到第n层多段压裂。 Packer, packer achieve the object layer; C, continue to add a first layer directly on the hydraulic fracturing; D, further increase of hydraulic high pressure fluid into the second layer of full-bore packer pressure guiding sand (3) Ball Block pressure guide passage, the second layer of full-bore packer pressure guiding sand (3) may be adjustable ring (6) shrinkage, fracture of the second layer do pitching slip sleeve preparation; E, wellhead pressure cast after blastomeres, down into the second layer, the second layer of fractured ball into full-bore packer pressure guiding sand (3) may be adjustable ring (6), to improve the open full bore hydraulic conductivity of the second layer sandblasting pressure packer (3) of the sleeve, the second layer fracturing channel opening, on the second layer to fracturing; F, steps de repeated, using the same specifications of the third layer to the fracturing of the ball n layer multistage fracturing.
CN201610402303.5A 2016-06-08 2016-06-08 Full bore hydraulic fracturing process large displacement CN106089172B (en)

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CN104632168A (en) * 2013-11-15 2015-05-20 中国石油天然气股份有限公司 Hydraulic sand blasting perforation large-displacement fracturing technological tubing string and method
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