CN202832464U - Coiled tubing hydraulic jet multistage acid fracturing tool pipe column - Google Patents
Coiled tubing hydraulic jet multistage acid fracturing tool pipe column Download PDFInfo
- Publication number
- CN202832464U CN202832464U CN 201220476668 CN201220476668U CN202832464U CN 202832464 U CN202832464 U CN 202832464U CN 201220476668 CN201220476668 CN 201220476668 CN 201220476668 U CN201220476668 U CN 201220476668U CN 202832464 U CN202832464 U CN 202832464U
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- acid fracturing
- hydraulic jet
- tool
- pipe column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A coiled tubing hydraulic jet multistage acid fracturing tool pipe column is applied to oil field well repairing hydraulic jet fracture acidizing construction. The coiled tubing hydraulic jet multistage acid fracturing tool pipe column is characterized in that a screw type connecting machine is connected with the lower end of a coiled tubing in a threaded mode, a bivalve check valve is connected with the lower end of the screw type connecting machine, a release sub is connected with the lower end of the bivalve check valve, an upper centering device is connected with the lower end of the safe release sub, a hydraulic jet tool is connected with the lower end of the upper centering device, a lower centering device is connected with the lower end of the hydraulic jet tool, and a guiding shoe is connected with the lower end of the lower centering device. The coiled tubing hydraulic jet multistage acid fracturing tool pipe column has the advantages that the problem that the coiled tubing is used as a delivery tool is achieved, the position of the coiled tubing hydraulic jet multistage acid fracturing tool pipe column is controlled due to the fact that the coiled tubing is operated by the ground, multistage jet fracturing or acidizing construction to the stratum is achieved after a pipe string is tripped in once.
Description
Technical field
The utility model relates to the oil well technical field, being particularly related to the downhole tool tubing string that the Oil/gas Well downhole hydraulic sprays the fracture acidizing construction, is that a kind of downhole hydraulic that cooperates coiled tubing to carry out Oil/gas Well multistage perforation and fracture acidizing stimulation treatment sprays the fracture acidizing tool tubular column.
Background technology
Some In Oil Field Exploration And Developments for many years after, begin to Large-scale Acid Fracturing, deep-well-ultradeep well fracture acidizing with acidifying, reservoir reconstruction has become in the increasing the storage of oil field the requisite means of producing.The general buried depth of oilfield reservoir is large, belong to deep-well, ultradeep well, also have simultaneously the characteristics that the zone is wide, structure is many, non-homogeneity is strong, intrinsic fracture, natural dissolution pore also distribute comparatively general in the reservoir, cause boring lose returns in the Completion Operations, payzone is seriously polluted, and acid solution is mobile inhomogeneous, even flows into water layer or non-target payzone.The multistage reforming technology adopts general acid fracturing and packer segmentation ACID FRACTURING TECHNOLOGY usually at present.The general employed acid solution amount of acid fracturing is very large, and filter loss is very big, and sour rock reaction speed is fast simultaneously, and acid solution is serious along the journey loss, and it is indefinite to transform purpose.So that acid fracturing is difficult to reach the purpose of abundant transformation.Use packer segmentation ACID FRACTURING TECHNOLOGY segmentation hop count limited, and behind the segmentation acid fracturing, instrument can't take out pit shaft, it will be very difficult carrying out the workover treatment in later stage again.
The utility model content
The purpose of this utility model is: a kind of coiled tubing jetting multistage acid fracturing tool tubular column is provided, the pressure energy of highly pressurised liquid is converted into kinetic energy, adopt coiled tubing as hoisting tool, realize the operation of horizontal well multi-injection fracture acidizing.Satisfy and adopt coiled tubing to drag hydraulic jetting fracturing acidifying tool tubular column string, carry out continuously multi-injection acid fracturing operation, improve the efficient of spraying the acid fracturing operation.
The technical solution adopted in the utility model is: coiled tubing jetting multistage acid fracturing tool tubular column, comprise coiled tubing, screw-type connector, bivalve ball-and-seat, back-off sub, upper centralizer, hydrajet tool, lower centralizer and guide shoe, it is characterized in that: at the lower end of coiled tubing screw thread attachment screw formula connector, the lower end of screw-type connector connects the bivalve ball-and-seat; The lower end of bivalve ball-and-seat connects back-off sub; The effect of back-off sub is when the down-hole something unexpected happened, can leave smoothly the ending tool string behind, trips out the top coiled tubing, ensures operation.The lower end of safety joint connects upper centralizer; The lower end of upper centralizer connects hydrajet tool; The lower end of hydrajet tool 7 connects lower centralizer; The lower end of lower centralizer connects guide shoe.
The work progress of summary coiled tubing jetting multistage acid fracturing tool tubular column.Consult Fig. 1.Before the tool tubular column, be lowered to coiled tubing 2 in the sleeve pipe 1 of oil well under the construction operation, the lower end of continuous-tube 2 trips out coiled tubing to the Oil/gas Well shaft bottom and with at least two weeks of water flushing.To arrive certain depth position, Oil/gas Well down-hole under the above-mentioned multistage acid fracturing tool tubular column, hydrajet tool 7 is aimed at the oil-gas Layer that needs transformation.Then will flow to the highly pressurised liquid of abrasive material downhole hydraulic spraycan 7 with fracturing unit by ground connecting line and coiled tubing, hydrajet tool 7 is assembled the pressure energy of highly pressurised liquid and is converted into kinetic energy, to obtain maximum jet impact force, act on and cut on down-hole casing 1 and the rock or fragmentation, formation runs through sleeve pipe duct or small-sized crack, then continue to utilize fracturing unit by ground connecting line and coiled tubing acid solution or fracturing fluid to be transported on the downhole hydraulic spraycan, oil-gas Layer is carried out pressure break or acidifying transformation.After finishing one section construction operation, on carry coiled tubing and hydrajet tool 7 is aimed at another sections need the oil-gas Layer transformed, carry out as stated above pressure break or acidifying transformation, until finish construction operation.
The beneficial effects of the utility model: the utility model coiled tubing jetting multistage acid fracturing tool tubular column, utilize a spraycan, produce high-velocity fluid and penetrate down-hole casing, rock, and the duct is sprayed in formation in the stratum, the swabbing action that high-speed fluid ejection subsequently forms forms crack or acid-etched fracture so that liquid continues the inner stratum feed liquor toward the duct.Solved and utilized coiled tubing as means of delivery, operate in the face of coiled tubing by ground, control coiled tubing jetting multistage acid fracturing tool tubular column position, it is rear to stratum multi-injection pressure break or acidizing treatment to realize that once the pipe string is lowered to, and efficiency of construction improves more than five times under the prerequisite that ensures the tubing string safety.Ensured being lowered to smoothly of coiled tubing band hydrajet tool, the safe disposal of fortuitous event occurred, connection is convenient.
Description of drawings
Fig. 1 is the utility model coiled tubing jetting multistage acid fracturing tool tubular column structure schematic diagram.Wellhead assembly, 10 is to be the straight well cylinder in the pit shaft legend, this tool construction is adapted to horizontal wellbore equally.
Among the figure, 1-sleeve pipe, 2-coiled tubing, 3-screw-type connector, 4-bivalve ball-and-seat, 5-back-off sub, the upper centralizer of 6-, 7-hydrajet tool, centralizer under the 8-, 9-guide shoe.
The specific embodiment
Embodiment 1: take a coiled tubing jetting multistage acid fracturing tool tubular column as example, the utility model is described in further detail.
Consult Fig. 1.The utility model coiled tubing jetting multistage acid fracturing tool tubular column comprises coiled tubing 2, screw-type connector 3, bivalve ball-and-seat 4, back-off sub 5, upper centralizer 6, hydrajet tool 7, lower centralizer 8 and guide shoe 9.Selecting external diameter is 60.3mm coiled tubing 2, reduces the liquid frictional resistance, guarantees the needs of large discharge capacity injection acid fracturing.
The screw-type connector 3 that is threaded in the lower end of coiled tubing 2, the lower end of screw-type connector 3 connects a bivalve ball-and-seat 4; The lower end of bivalve ball-and-seat 4 connects a back-off sub 5.The lower end of safety joint 5 connects a upper centralizer 6; The lower end of upper centralizer 6 connects a hydrajet tool 7; The lower end of hydrajet tool 7 connects a lower centralizer 8; The lower end of lower centralizer 8 connects a guide shoe 9.Coiled tubing jetting multistage acid fracturing tool tubular column is lowered in the sleeve pipe 1, and the position of hydrajet tool 7 is relative with the stratum that needs the injection pressure break.
Claims (1)
1. coiled tubing jetting multistage acid fracturing tool tubular column, comprise coiled tubing (2), screw-type connector (3), bivalve ball-and-seat (4), back-off sub (5), upper centralizer (6), hydrajet tool (7), lower centralizer (8) and guide shoe (9), it is characterized in that: at the lower end of coiled tubing (2) screw thread attachment screw formula connector (3), the lower end of screw-type connector (3) connects bivalve ball-and-seat (4); The lower end of bivalve ball-and-seat (4) connects back-off sub (5); The lower end of safety joint (5) connects upper centralizer (6); The lower end of upper centralizer (6) connects hydrajet tool (7); The lower end of hydrajet tool (7) connects lower centralizer (8); The lower end of lower centralizer (8) connects guide shoe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476668 CN202832464U (en) | 2012-09-18 | 2012-09-18 | Coiled tubing hydraulic jet multistage acid fracturing tool pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476668 CN202832464U (en) | 2012-09-18 | 2012-09-18 | Coiled tubing hydraulic jet multistage acid fracturing tool pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832464U true CN202832464U (en) | 2013-03-27 |
Family
ID=47944196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220476668 Expired - Fee Related CN202832464U (en) | 2012-09-18 | 2012-09-18 | Coiled tubing hydraulic jet multistage acid fracturing tool pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832464U (en) |
-
2012
- 2012-09-18 CN CN 201220476668 patent/CN202832464U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108979569A (en) | A kind of method of three layers of de-plugging of fixed tubular column | |
| CN201367892Y (en) | Pipe string structure of downhole hydraulic-jetting fracturing and acidizing tool of oil-gas well | |
| CN101446187B (en) | Twin packer hydro-jet fracturing technology | |
| WO2009055381A3 (en) | Apparatus and method for conveyance and control of a high pressure hose in jet drilling operations | |
| CN104912479B (en) | Method for drilling and completion of horizontal branched well for coal bed gas | |
| CN105464638A (en) | Coal bed gas well pulse radial drilling and double-pulsating hydrofracturing method | |
| CN102562019A (en) | Sand jet perforation annular mechanical packing multilayer fracturing tool pipe column and modification process | |
| CN106837172B (en) | A kind of radial well solves the boring method of thin interbed | |
| CN101824966A (en) | Device for jetting ultrashort radius horizontal hole by using high-pressure water | |
| CN202325239U (en) | Hydraulic jetting radial drilling device | |
| CN106703720B (en) | A kind of drilling rig of steel wire drive | |
| CN101942986A (en) | Abrasive jet injection multiple fracturing device | |
| CN112211601A (en) | Coiled tubing and packer combined staged fracturing string for slim-hole well and method | |
| CN106837171B (en) | A kind of compact reservoir radial direction boring means external member | |
| CN107288540A (en) | A kind of oil/gas drilling volume increase connection makees device and method | |
| CN105569620A (en) | Method and device for deep penetration perforation used in well completion of open hole well | |
| CN110439525A (en) | Coal bed gas horizontal well de-plugging, anti-reflection completion method | |
| CN202370459U (en) | Tube stem guiding type blowout prevention injection head | |
| CN106639997B (en) | Device and method for reducing viscosity of heavy oil by injecting agent through high-pressure water jet of continuous oil pipe | |
| CN112431579B (en) | Preset small-diameter pipe internal fracturing device and method for side drilling well and small-hole well | |
| CN204041042U (en) | A kind of coiled tubing drag fracturing tubing string | |
| CN105625945B (en) | Drilling equipment and its boring method for low permeability reservoir | |
| CN202370495U (en) | Sand blasting perforation annular mechanical packing multilayer fracturing tool tubular column for oil-gas well | |
| CN202832464U (en) | Coiled tubing hydraulic jet multistage acid fracturing tool pipe column | |
| CN201679445U (en) | Continuous pipe type radial well drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210918 |