CN201218087Y - Hydropower sand jet perforator - Google Patents

Hydropower sand jet perforator Download PDF

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Publication number
CN201218087Y
CN201218087Y CNU2008201092551U CN200820109255U CN201218087Y CN 201218087 Y CN201218087 Y CN 201218087Y CN U2008201092551 U CNU2008201092551 U CN U2008201092551U CN 200820109255 U CN200820109255 U CN 200820109255U CN 201218087 Y CN201218087 Y CN 201218087Y
Authority
CN
China
Prior art keywords
hole section
nozzle
holes
hole
taper hole
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 - Lifetime
Application number
CNU2008201092551U
Other languages
Chinese (zh)
Inventor
胡强法
朱峰
陈智
张友军
汤红玲
张炎
于东兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Petroleum Corp, CNPC Drilling Research Institute Co Ltd filed Critical China National Petroleum Corp
Priority to CNU2008201092551U priority Critical patent/CN201218087Y/en
Application granted granted Critical
Publication of CN201218087Y publication Critical patent/CN201218087Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a hydraulic sand jet perforator composed of a perforator body and nozzles or orifice plugs, wherein the perforator body has a cylindrical pipe-type structure, 2-4 rows of mounting holes are arranged on the perforator body, 2-4 holes are symmetrically distributed on each row along the 180 DEG circumferential direction, the 120 DEG circumferential direction and the 90 DEG circumferential direction, and the positions of the holes of the adjacent two rows are staggered. The nozzle is formed by combining a straight hole section with a taper hole section, the straight hole section is made of a cemented carbide material, the inner hole of the straight hole section has a cylinder hole structure, the taper hole section is formed by pressing and sintering cemented carbide powder, the inlet of the inner hole of the taper hole section is in a streamline shape, the outlet of the inner hole of the taper hole section has a taper hole structure, the nozzles or the orifice plugs are arranged in the mounting holes, and are fixed in the mounting holes in a threaded connection way through sealing and positioning sleeves, on the end faces of which 4 dead holes are symmetrically arranged, seal rings are used for sealing, and copper gaskets are used for clamping. The utility model has the advantages that the long-time erosion of high-speed perforation fluid containing sand can be endured, the perforating operations under the mine can be finished time after time, a plurality of horizons are perforated for the institutional operation of sand jet perforation and hydraulic fracture, the construction procedures are simplified, and the cost is reduced.

Description

A kind of sand jet perforator
Technical field
The utility model relates to the sand jet perforator that the oil gas well that is applicable to multiple completion mode that a kind of petroleum industry uses not only can have been finished hydraulic jet perforation but also can be used for fracturing.
Background technology
Hydraulic jet perforation is carried high pressure sand-laden fluid stream by ground to the shaft bottom, penetrates in the destination layer position and wears pipe and cement sheath, and penetrate the stratum certain depth, forms diameter and penetrates darker duct more greatly, sets up pit shaft and is communicated with the effective of ground interlayer.At present, although conventional sand jet perforator has various ways, also used decades in the field operation of oil field, a common issue with that exists is that the nozzle life-span is limited.In the abrasive perforating operation process, the very fast change of nozzle diameter is big under the erosion of high speed sand-laden fluid, for keeping effluxvelocity to need constantly to increase the infusion discharge capacity, but because pump group ability can not unrestrictedly increase, cause the time of each perforating job to be restricted, also just limited the degree of depth that penetrates and influenced the effect of operation; Same owing to the nozzle age limit, the number of times of operation was also very limited after instrument was gone into the well at every turn, had influenced operating efficiency, had increased the cost of operation.To needing to implement behind the perforation oil gas well operations of pressure break, because it is more serious than the erosion of hydraulic jet perforation sand-laden fluid to contain the of the fracturing fluid erosion of sand, can further shorten the nozzle life-span, must trip out the hydraulic jet perforation tubing string in this case, be lowered to the fracturing tubing string once more and carry out pressure break, long construction period, cost increase.
The novel hydropower ejector that can be used for hydraulic jet perforation, fracturing integrated operation that occurs recent years generally adopts whole nozzle structure, and whole nozzle is difficult in and takes into account processing technology and economy under the situation that guarantees the life-span, attends to one thing and lose sight of another easily.
The utility model content
The purpose of this utility model is to provide a kind of sand jet perforator, utilizes combination nozzle structure to realize the unification of high life and processing technology and economy.
Sand jet perforator described in the utility model is made of ejector body and nozzle or spray orifice plug, ejector body is a cylinder cast structure, on ejector body, open 2-4 row installing hole, every row is along 180 °, 120 ° or 90 ° of circumferential symmetrical distribution 2-4 holes, and the orientation in hole staggers between every adjacent two rows; The endoporus that nozzle is made by Hardmetal materials be the straight hole section of cylindrical hole structure and by the endoporus of cemented carbide powder compacting sintering moulding inlet for streamlined, outlet combines for the taper hole section of taper hole structure, nozzle or spray orifice plug are installed in the installing hole, sealing positioning sleeve by 4 blind holes of end face symmetric arrangement is fixed in the installing hole with thread connecting mode, by the sealing ring sealing, compress by copper packing.
The effect of invention: this sand jet perforator is used for hydraulic jet perforation, can tolerate the long-time erosion that contains the sand perforating fluid at a high speed, can under the basicly stable situation of infusion discharge capacity, finish perforating job by design time, guarantee penetration depth and operation effectiveness, also can after going into the well, finish repeatedly perforating job, penetrate out a plurality of layers of position.
This sand jet perforator is used for abrasive perforating, fracturing institutional operation, can directly carry out pressing crack construction behind the perforation, and one-trip string can carry out repeatedly perforating and fracturing operation, can simplify working procedure and reduce cost.
Advantage of the present utility model is: 1) adopt combination nozzle structure, form the streamlined runner by the taper hole section, improve the hydraulic characteristic(s) of nozzle, by the high life of straight hole section assurance nozzle, realize the unification of high life and processing technology, economy; 2) in the installing hole of many row's symmetric arrangement, can select to install nozzle or spray orifice plug, and select the nozzle of different-diameter, can satisfy the requirement of different process neatly nozzle diameter, hole count and orientation according to arts demand.
Description of drawings
Fig. 1 sand jet perforator structural representation;
Fig. 2 is along the sectional drawing of B-B position among Fig. 1;
Fig. 3 is along the sectional drawing of C-C position among Fig. 1;
Fig. 4 positioning operation nozzle is arranged the embodiment schematic diagram;
Fig. 5 nozzle symmetrical distribution embodiment schematic diagram;
Fig. 6 is along the sectional drawing of D-D position among Fig. 5;
Fig. 7 is along the sectional drawing of E-E position among Fig. 5.
Wherein: 1, ejector body 2, sealing ring 3, sealing positioning sleeve 4, sealing ring 5, copper packing 6, nozzle 7, spray orifice plug 8, installing hole 9, blind hole.
The specific embodiment
Detailed in addition according to sand jet perforator structure described in the utility model below narration.
As shown in Figure 1: this sand jet perforator is made up of ejector body 1, sealing ring 2, sealing positioning sleeve 3, sealing ring 4, copper packing 5, nozzle 6, spray orifice plug 7.Sealing positioning sleeve 3 is fixed on nozzle 6 or spray orifice plug 7 in the installing hole 8 on the ejector body 1, and sealing positioning sleeve 3 is fixing by being threaded with ejector body 1, is sealed by sealing ring 2; Sealing positioning sleeve 3 adopts matched in clearance to install with nozzle 6 or spray orifice plug 7, by sealing ring 4 sealings; Compress by copper packing 5 when nozzle 6 is installed, play a part locking and damping.4 blind holes 9 of end face symmetric arrangement of sealing positioning sleeve 3 can be used rotary seal positioning sleeve 3 in the special spanner patchhole, can install and remove easily under physical dimension and space condition of limited.Nozzle 6 is combined by straight hole section, taper hole section, and straight hole section endoporus is a cylindrical hole, and taper hole section endoporus inlet is streamlined, exports to be taper hole, and the taper hole outlet diameter is consistent with the cylindrical hole diameter.
Arrangement by selecting installing hole on the ejector body 1, be chosen in nozzle 6 or spray orifice plug 7 are installed in the different installing holes, select the diameter of bore of nozzle 6, can adapt to the construction requirement of different process.
Straight hole section endoporus cylindrical hole, requirement 2 hours endoporus outlet diameters of injection work increase under following parameter condition is no more than 0.5mm: the sand-laden fluid solid phase is the haydite of granularity 0.45~0.9mm, and mass concentration is 30%, effluxvelocity 240m/s.When being used for the hydraulic jet perforation operation, the nozzle outlet diameter is 3~5mm; When being used for abrasive perforating, fracturing institutional operation, the nozzle outlet diameter is 6~7mm.
As shown in Figure 4, for need be along the stratum a certain azimuthal orientation perforation or form the situation of longitudinal crack, nozzle 6 on the sand jet perforator is along the shaft section symmetric arrangement of ejector body 1, what Fig. 4 represented is the example of 6 nozzles of symmetrical distribution, and other direction on the ejector body 1 is processing mounting holes 8 not.During operation, after desired depth, make the stratum orientation of nozzle 6 under the instrument towards appointment by direction finder, to carry out hydraulic jet perforation or abrasive perforating, fracturing institutional operation after the tool positioned, can realize oriented perforating or not have vertical pressure break that nearly well crack turns to.
To not requiring directed occasion, the nozzle 6 on the sand jet perforator can be installed on the installing hole 8 of many row's symmetric arrangement, and 8 of other installing holes are installed 7 shutoff of spray orifice plug.The same example that is distributed as with 6 nozzles, as shown in Figs. 5 to 7, can make two row's installing holes 8 on the perforator body 1 of sand jet perforator, every row is by 120 ° of 3 installing holes 8 that are symmetrically distributed, installing hole 8 between two rows staggers 60 ° mutually, and a nozzle 6 respectively is installed in each installing hole 8; As shown in Figures 1 to 3, also can be on the body 1 of sand jet perforator by process 4 row's installing holes 8 as the mode of Fig. 1, every row is by 90 ° of 4 installing holes 8 that are symmetrically distributed, adjacent two rounds stagger 45 ° mutually, and can be by shown in Fig. 2,3, in row's installing hole 84 nozzles 6 are installed, symmetry is installed 2 nozzles 6 in another adjacent row's installing hole 8, and 7 shutoff of spray orifice plug then are installed in other installing hole 8.

Claims (1)

1. sand jet perforator, constitute by ejector body and nozzle or spray orifice plug, it is characterized in that: ejector body is a cylinder cast structure, on ejector body, open 2-4 row installing hole, every row is along 180 °, 120 ° or 90 ° of circumferential symmetrical distribution 2-4 holes, and the orientation in hole staggers between every adjacent two rows; The endoporus that nozzle is made by Hardmetal materials be the straight hole section of cylindrical hole structure and by the endoporus of cemented carbide powder compacting sintering moulding inlet for streamlined, outlet combines for the taper hole section of taper hole structure, nozzle or spray orifice plug are installed in the installing hole, sealing positioning sleeve by 4 blind holes of end face symmetric arrangement is fixed in the installing hole with thread connecting mode, by the sealing ring sealing, compress by copper packing.
CNU2008201092551U 2008-07-16 2008-07-16 Hydropower sand jet perforator Expired - Lifetime CN201218087Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201092551U CN201218087Y (en) 2008-07-16 2008-07-16 Hydropower sand jet perforator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201092551U CN201218087Y (en) 2008-07-16 2008-07-16 Hydropower sand jet perforator

Publications (1)

Publication Number Publication Date
CN201218087Y true CN201218087Y (en) 2009-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201092551U Expired - Lifetime CN201218087Y (en) 2008-07-16 2008-07-16 Hydropower sand jet perforator

Country Status (1)

Country Link
CN (1) CN201218087Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043038A (en) * 2012-12-28 2013-04-17 苏州新奇特清洗设备有限公司 Water jet connector
CN103821490A (en) * 2014-03-11 2014-05-28 中国石油化工股份有限公司 Special ejector with multilevel hydraulic ejecting and staged fracturing
CN104879159A (en) * 2015-06-11 2015-09-02 河南理工大学 Gas permeability-increase extraction device and method for soft coal seam stoping face
WO2016112590A1 (en) * 2015-01-13 2016-07-21 杰瑞能源服务有限公司 Anti-back-splashing sandblasting perforator
CN106351616A (en) * 2015-07-14 2017-01-25 中国石油天然气股份有限公司 Ejector with telescopic nozzles
CN106968648A (en) * 2017-03-14 2017-07-21 咸阳川庆鑫源工程技术有限公司 A kind of wear-resisting nonmetallic double helix hydraulic ejector
CN110608025A (en) * 2018-06-15 2019-12-24 中石化石油工程技术服务有限公司 Pulse type spraying sand adding tool
CN111395964A (en) * 2020-03-27 2020-07-10 中国石油大学(北京) Horizontal section cave-making spray gun, tubular column and cave-making method for coal bed gas horizontal well

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043038A (en) * 2012-12-28 2013-04-17 苏州新奇特清洗设备有限公司 Water jet connector
CN103821490A (en) * 2014-03-11 2014-05-28 中国石油化工股份有限公司 Special ejector with multilevel hydraulic ejecting and staged fracturing
WO2016112590A1 (en) * 2015-01-13 2016-07-21 杰瑞能源服务有限公司 Anti-back-splashing sandblasting perforator
CN104879159A (en) * 2015-06-11 2015-09-02 河南理工大学 Gas permeability-increase extraction device and method for soft coal seam stoping face
CN106351616A (en) * 2015-07-14 2017-01-25 中国石油天然气股份有限公司 Ejector with telescopic nozzles
CN106968648A (en) * 2017-03-14 2017-07-21 咸阳川庆鑫源工程技术有限公司 A kind of wear-resisting nonmetallic double helix hydraulic ejector
CN110608025A (en) * 2018-06-15 2019-12-24 中石化石油工程技术服务有限公司 Pulse type spraying sand adding tool
CN111395964A (en) * 2020-03-27 2020-07-10 中国石油大学(北京) Horizontal section cave-making spray gun, tubular column and cave-making method for coal bed gas horizontal well
CN111395964B (en) * 2020-03-27 2021-03-23 中国石油大学(北京) Horizontal section cave-making spray gun, tubular column and cave-making method for coal bed gas horizontal well

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Granted publication date: 20090408