CN1888380A

CN1888380A - Combined injection device

Info

Publication number: CN1888380A
Application number: CNA200610010361XA
Authority: CN
Inventors: 杨野; 裴晓含; 高飞; 张书进; 高纯良
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Daqing Oilfield Co Ltd
Priority date: 2006-08-02
Filing date: 2006-08-02
Publication date: 2007-01-03

Abstract

The present invention belongs to a separate injection well flow injection and test device. It is characterized by that on the main body a first combined injection distributor eccentric hole, a second combined injection distributor eccentric hole, a combined injection distributor side eccentric hole and a by-pass eccentric hole are set, on the external wall of said plug eccentric hole a combined injection distributor upper liquid outlet is cut, and on the external wall of the setting sleeve a combined injection distributor lower liquid outlet is cut, and the plug is placed in the plug eccentric hole.

Description

Combined injection device

Technical field: the present invention relates to laminated distributor under well water injection technology field, oil field, belong to a kind of seperated layer water injection well yield especially and inject and testing arrangement.

Background technology: the integrated water filling device of existing off-centre, can finish the test or the allotment of two intervals simultaneously, but because this device adopts endoporus side direction feed liquor, and two inlet opening distances are very near, when carrying out stratified flow rate test, can't adopt present widely used non-collective flow formula test technology, can only be used, bring a lot of inconvenience to on-the-spot test with testing seal section.

Summary of the invention: the purpose of this invention is to provide a kind of combined injection device, this injection device is not an endoporus side direction feed liquor, when carrying out stratified flow rate test, does not need the use test seal section, just can go out each laminar flow amount by the non-collective flow follow-on test.

The present invention is made up of combined type injection allocation device and blanking plug.Combined type injection allocation device by top connection, O RunddichtringO, sheath, guide way, spring, well-flushing plug, main body, set body, packing element, set pin, deblocking pin, lock ring, setting sleeve, central tube, piston, lower contact form; Wherein the sheath upper and lower side respectively with top connection, main body is threaded, guide way is fixedlyed connected with the upper end of main body, on main body, be provided with combined type injection allocation device eccentric orfice, the combined type injection distributing filler eccentric hole, combined type injection allocation device lateral deviation hole and other hole partially, combined type injection allocation device eccentric orfice and combined type injection allocation device lateral deviation hole are connected by inclined to one side hole, side, outer wall at the blanking plug eccentric orfice has fluid hole on the combined type injection allocation device, spring and well-flushing plug are arranged in the combined type injection distributing filler eccentric hole of main body, the lower end inner surface of main body contacts by the sealing of O RunddichtringO with the external surface of central tube upper end, the inner surface that sets body and central tube external surface are by being threaded, fluid hole is arranged setting on the body, packing element is arranged on and sets body undergauge place, lock ring with set the body lower end and be connected by the deblocking pin, setting sleeve upper end is by setting pin and lock ring and setting the body lower end and link to each other, have fluid hole under the combined type injection allocation device at the setting sleeve outer wall, the lower end inner surface of central tube upper end and main body is by being threaded, between setting sleeve inwall and central tube outer wall, piston is housed, the piston below is provided with pressure guide hole on central tube, at the central tube outer wall and set cavity and annular housing are arranged between the body inwall, their upper ends communicate with the combined type injection distributing filler eccentric hole, lower contact is threaded with the central tube lower end, and blanking plug is arranged in the blanking plug eccentric orfice.

Compared with the prior art the present invention has following advantage: combined injection device provided by the present invention can be realized the continuous non-collective flow test of zonal flow rate, testing efficiency of Ti Gaoing and measuring accuracy greatly; Be not subjected to card apart from restriction, can realize that subdivision of reservoir injects; And the testing tool size is short and small, easy operating.

Description of drawings: Fig. 1 is a structural representation of putting into blanking plug 40 in the combined type injection allocation device 30 of the present invention, and Fig. 2 is the cross-sectional view of main body 7, and Fig. 3 is the structural representation of blanking plug 40, and Fig. 4 is a non-collective flow flow rate test schematic diagram.

The specific embodiment: (referring to Fig. 1-Fig. 3) the present invention is made up of combined type injection allocation device 30 and blanking plug 40, combined type injection allocation device 30 by top connection 1, O RunddichtringO 2, sheath 3, guide way 4, spring 5, well-flushing plug 6, main body 7, set body 8, packing element 9, set pin 10, deblocking pin 29, lock ring 11, setting sleeve 12, central tube 13, piston 14, lower contact 15 form; Wherein sheath 3 upper and lower sides respectively with top connection 1, main body 7 is threaded, guide way 4 is fixedlyed connected with the upper end of main body 7, on main body 7, be provided with combined type injection allocation device eccentric orfice 17, combined type injection distributing filler eccentric hole 18, combined type injection allocation device lateral deviation hole 25 and other hole 22 partially, combined type injection allocation device eccentric orfice 17 and combined type injection allocation device lateral deviation hole 25 are connected by inclined to one side hole 22, side, outer wall at blanking plug eccentric orfice 17 has fluid hole 16 on the combined type injection allocation device, spring 5 and well-flushing plug 6 are arranged in the combined type injection distributing filler eccentric hole 18 of main body 7, the lower end inner surface of main body 7 contacts by 2 sealings of O RunddichtringO with the external surface of central tube 13 upper ends, the inner surface that sets body 8 and central tube 13 external surfaces are by being threaded, fluid hole 24 is arranged setting on the body 8, packing element 9 is arranged on and sets body 8 undergauge places, lock ring 11 with set body 8 lower ends and be connected by deblocking pin 29, setting sleeve 12 upper ends are by setting pin 10 and lock ring 11 and setting body 8 lower ends and link to each other, have fluid hole 21 under the combined type injection allocation device at setting sleeve 12 outer walls, the lower end inner surface of central tube 13 upper ends and main body 7 is by being threaded, between setting sleeve 12 inwalls and central tube 13 outer walls, piston 14 is housed, piston 14 belows are provided with pressure guide hole 23 on central tube 13, at central tube 13 outer walls and set cavity 19 and annular housing 20 are arranged between body 8 inwalls, their upper ends communicate with combined type injection distributing filler eccentric hole 18, lower contact 15 is threaded with central tube 13 lower ends, and blanking plug 40 is arranged in the blanking plug eccentric orfice 17.

Blanking plug 40 is made up of fishing rod 41, pressure cap 42, stage clip 43, supporting seat 44, torsion spring 45, cam 46, camshaft 47, connector 48, filter screen 49, upper strata water nozzle 54, lower floor's water nozzle 55; Wherein the lower end of fishing rod 41 is arranged in the upper end of supporting seat 44, pressure cap 42 is enclosed within the outside of fishing rod 41 and is threaded in the upper end of supporting seat 44, be provided with stage clip 43 between the lower end of fishing rod 41 and the pressure cap 42, cam 46 is located on the inwall of supporting seat 44 by camshaft 47, camshaft 47 is provided with torsion spring 45, the upper end of connector 48 is threaded with the lower end of supporting seat 44, upper and lower side is respectively equipped with upper strata water nozzle 54 in the connector 48, lower floor's water nozzle 55, the lower end of connector 48 is threaded with the upper end of filter screen 49, the upper end of supporting seat 44 has inlet opening 50, connector about in the of 48 two recesses last fluid hole 51 and following fluid hole 52 are arranged respectively, filter screen 49 lower ends have down inlet opening 53.

Operating principle: during normal water filling, the last inlet opening 50 that part is injected water process blanking plug 40 enters in the pressure cap 42, when flowing through upper strata water nozzle 55, form chock pressure difference, reduce injection pressure and limited injection rate, inject flow through the respectively last fluid hole 51 of connector 48 of water then, fluid hole 16 enters overlying strata on the combined type injection allocation device; Part injection water enters in the filter screen 49 through the following inlet opening 53 of blanking plug 40 in addition, when flowing through lower floor's water nozzle 56, form chock pressure difference, reduce injection pressure and limited injection rate, inject flow through the again following fluid hole 52 of connector 48 of water then, enter in the inclined to one side hole 22, side on the main body 7, fluid hole 21 enters sub-surface under the combined type injection allocation device lateral deviation of flowing through again hole 25, cavity 19, annular housing 20, fluid hole 24 and the combined type injection allocation device.

Inwall at top connection 1, main body 7 and central tube 13 has three identical test job faces of internal diameter respectively, is respectively work plane 26, middle work plane 27, following work plane 28.

When adopting the non-collective flow method to carry out stratified flow rate test, the major part of injection liquid is passed through the flow meter inlet opening 32 on the non-collective flow flow meter 31 and is entered and flows out downwards after centre bore 33 is finished flow measurement, the external diameter of non-collective flow flow meter 31 is slightly less than the internal diameter of three work planes of upper, middle and lower, and the flow that goes from the annular gap leakage can compensate correction.When field by using non-collective flow method is carried out stratified flow rate test, at first non-collective flow flow meter 31 was descended combined type injection allocation device 30 following 3m～5m, and then on carry non-collective flow flow meter 31, last carry the following work plane 27 that passes through combined type injection allocation device 30 in the process successively, middle work plane 26, on during work plane 25, non-collective flow flow meter 31 is its corresponding flow value of acquisition and recording respectively, and the flow difference of middle like this work plane 26 and following work plane 27 is the injection flow of sub-surface; The flow difference of last work plane 25 and middle work plane 26 is the injection flow of overlying strata.According to measured zonal flow rate, the flow curve that meets the injection allocation scheme by non-collective flow flow meter 31 each layer of test zonal flow rate, is obtained again at last in the mouth footpath of the upper strata water nozzle 55 in the adjustment blanking plug 40 and lower floor's water nozzle 56.

Claims

1, combined injection device, it is made up of combined type injection allocation device (30) and blanking plug (40), it is characterized in that combined type injection allocation device (30) by top connection (1), O RunddichtringO (2), sheath (3), guide way (4), spring (5), well-flushing plug (6), main body (7), set body (8), packing element (9), set pin (10), deblocking pin (29), lock ring (11), setting sleeve (12), central tube (13), piston (14), lower contact (15) form; Wherein sheath (3) upper and lower side respectively with top connection (1), main body (7) is threaded, guide way (4) is fixedlyed connected with the upper end of main body (7), on main body (7), be provided with combined type injection allocation device eccentric orfice (17), combined type injection distributing filler eccentric hole (18), combined type injection allocation device lateral deviation hole (25) and other hole (22) partially, combined type injection allocation device eccentric orfice (17) and combined type injection allocation device lateral deviation hole (25) are connected by other hole (22) partially, outer wall at blanking plug eccentric orfice (17) has fluid hole (16) on the combined type injection allocation device, spring (5) and well-flushing plug (6) are arranged in the combined type injection distributing filler eccentric hole (18) of main body (7), the lower end inner surface of main body (7) contacts by O RunddichtringO (2) sealing with the external surface of central tube (13) upper end, the inner surface that sets body (8) and central tube (13) external surface are by being threaded, fluid hole (24) is arranged setting on the body (8), packing element (9) is arranged on and sets body (8) undergauge place, lock ring (11) with set body (8) lower end and be connected by deblocking pin (29), setting sleeve (12) upper end is by setting pin (10) and lock ring (11) and setting body (8) lower end and link to each other, have fluid hole (21) under the combined type injection allocation device at setting sleeve (12) outer wall, the lower end inner surface of central tube (13) upper end and main body (7) is by being threaded, between setting sleeve (12) inwall and central tube (13) outer wall, piston (14) is housed, piston (14) below is provided with pressure guide hole (23) on central tube (13), at central tube (13) outer wall and set cavity (19) and annular housing (20) are arranged between body (8) inwall, their upper ends communicate with combined type injection distributing filler eccentric hole (18), lower contact (15) is threaded with central tube (13) lower end, and blanking plug (40) is arranged in the blanking plug eccentric orfice (17).

2, combined injection device according to claim 1 is characterized in that blanking plug (40) is made up of fishing rod (41), pressure cap (42), stage clip (43), supporting seat (44), torsion spring (45), cam (46), camshaft (47), connector (48), filter screen (49), upper strata water nozzle (54), lower floor's water nozzle (55); Wherein the lower end of fishing rod (41) is arranged in the upper end of supporting seat (44), pressure cap (42) is enclosed within the outside of fishing rod (41) and is threaded in the upper end of supporting seat (44), be provided with stage clip (43) between the lower end of fishing rod (41) and the pressure cap (42), cam (46) is located on the inwall of supporting seat (44) by camshaft (47), camshaft (47) is provided with torsion spring (45), the upper end of connector (48) is threaded with the lower end of supporting seat (44), the interior upper and lower side of connector (48) is respectively equipped with upper strata water nozzle (54), lower floor's water nozzle (55), the lower end of connector (48) is threaded with the upper end of filter screen (49), the upper end of supporting seat (44) has inlet opening (50), connector (48) two recesses up and down has last fluid hole (51) and following fluid hole (52) respectively, and filter screen (49) lower end has down inlet opening (53).