CN104481460B

CN104481460B - Large pump oil pumping system

Info

Publication number: CN104481460B
Application number: CN201410654229.7A
Authority: CN
Inventors: 梁伟成; 梁闯
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-18
Filing date: 2014-11-18
Publication date: 2017-02-22
Anticipated expiration: 2034-11-18
Also published as: CN104481460A

Abstract

The invention discloses a large pump oil pumping system. The system comprises a self-sealing packer, a poking rod, a handle packer, a tension spring valve and a packer base seal switch, and is characterized in that the self-sealing packer is in threaded connection with the poking rod; the poking rod passes through the handle packer, the tension spring valve and an oil pipe and is concentric to the handle packer, the tension spring valve and the oil pipe; a preset distance is formed between an annular bump at a connecting segment of the upper end of the poking rod and the upper end face of a central pipe of the handle packer; an outer pipe of the poking rod is connected with the central pipe of the handle packer; the handle packer is in threaded connection with the tension spring valve; the tension spring valve is in threaded connection with the oil pipe; the oil pipe is in threaded connection with the packer base seal switch; a distance is preformed between the lower end face of an internal ball base of the packer base seal switch and an inner seam allowance of the lower end of the main body. The large pump oil pumping system disclosed by the invention realizes one-step downing of a water blocking assembly and a production pipe column assembly, is convenient to connect and good in interchangeability, has the functions of preventing spray in the oil pipe, preventing release of the water blocking assembly and preventing the oil pipe from being pressed, saves operation cost and shortens the operation time.

Description

Big pumping oil operating system

Technical field

The invention belongs to a kind of oil field equipment, particularly a kind of big pumping oil operating system.

Background technology

Well recovery produce before, first have to water blockoff assembly is gone into the well, after water blockoff assembly realizes water blockoff function in addition it is also necessary to Act the oil pipe of more than big pump, and transfer flow string assembly again, just can carry out oil producing operation, due to repeatable operation, make Downhole technique is comparatively laborious, and operating cost is higher, will play out tubing string in workover treatment, but due to not having blowout prevention procedure, because And cause well head oil spout, waste the energy and pollute environment again；Because oil pipe more than big pump is fixed on well head, oil pipe more than big pump On be provided with support anchor fixing device, so well head arrive support anchor between big pump more than oil pipe distance fixation, due to big Oil pipe more than pump is risen high factor by temperature to be affected to extend, and will press the situation of the oil pipe of more than big pump, cause Tubing bending more than big pump, produces serious eccentric wear, and eccentric wear main harm is：Oil pipe is caused to miss；The iron filings that eccentric wear produces Holddown etc..Eccentric wear makes the too early damage of oil pipe column, the normal production of impact oil well, needs well workover, greatly increased operation Time and operating cost.

The invention aims to realize water blockoff assembly disposably going into the well with flow string assembly, be simultaneously connected with conveniently, Interchangeability is good, and can realize the function of blowout prevention in oil pipe, water blockoff assembly anticreep and not pressuring oil pipe, saves operating cost, contracting The short activity duration.

The technical scheme that the present invention provides is as follows：Including from sealed packer, tapping pin, back-off packer, extension spring valve and envelope Set switch every device, it is characterized in that：From the vulcanizate tube inner surface of sealed packer, the circular cone that angle is 12 degree is set；Self-styled Packer lower end threaded tapping pin upper end, tapping pin passes through back-off packer, extension spring valve and oil pipe and concentric, tapping pin upper end The central canal upper surface of linkage section lower surface and back-off packer preset space is set；The outer tube of tapping pin and back-off packer Central canal is connected by pin, and back-off packer lower end is threaded connection the upper end of extension spring valve, and extension spring valve lower end is passed through Threaded oil pipe, oil pipe lower end is threaded connection packer setting switch；The built-in ball seat of main body of packer setting switch, And fixed by pin, reserve a certain distance between the lower end inner stopper of the lower surface of built-in ball seat and main body；Steel ball is installed In ball seat port, pressing plate is connected with main body screw so that steel ball is fixed.

The positive effect of the present invention is：Achieve water blockoff assembly disposably to go into the well with flow string assembly, easy to connect, mutual Transsexual good, and there is the function of blowout prevention in oil pipe, water blockoff assembly anticreep and not pressuring oil pipe, not only greatly save operation cost With, but also shorten the activity duration.

Brief description

Fig. 1 is the structural representation of the present invention.

Fig. 2 is self-styled packer construction schematic diagram.

Fig. 3 is to set switch structure diagram.

Specific embodiment

The present invention switchs 5 five parts by from sealed packer 1, tapping pin 2, back-off packer 3, extension spring valve 4, packer setting Composition, wherein presses existing product structure assembling from sealed packer 1, setting connects the central canal 14 of top connection 11, central canal 14 Upper sulfuration core 13 sulfuration passing through fixation has two pieces bowl-shape sulfuration packing element 12, and tapping pin 2, back-off packer 3 and main body are built-in Each assembly such as extension spring valve 4 of panel turnover switch F.

Improved drip irrigation device is as follows：It is the annular of a from the sulfuration packing element 12 inner surface setting angle of sealed packer 1 The conical surface, angle a is 12 degree；From sealed packer 1 lower end threaded tapping pin 2 upper end, tapping pin 2 passes through back-off packer 3, extension spring to live Door 4 and oil pipe G and with one heart, the central canal B upper surface of the linkage section lower surface of tapping pin 2 upper end and back-off packer 3 arranges pre- Stay apart from A, preset space A is 30mm；The outer tube D of tapping pin 2 is connected by pin C with the central canal B of back-off packer 3, gives up Packer 3 lower end is threaded connection the upper end of extension spring valve 4, and extension spring valve 4 lower end is threaded connection oil pipe G, under oil pipe G End is threaded connection packer setting switch 5；

The main body 5-1 built-in ball seat 5-5 of packer setting switch 5, and fixed by pin 5-4, under built-in ball seat 5-5 Reserve a certain distance H between the lower end inner stopper of end face and main body 5-1, be 12mm-20mm apart from H, steel ball 5-3 is arranged on ball Seat 5-5 port, pressing plate 5-2 is threadeded with main body 5-1 so that steel ball 5-3 fixes.

Operation principle

The valve that the present invention is connected under the pump big with the oil well pump in flow string of sealed packer 1 upper end passes through screw thread Connect, packer setting is switched 5 lower ends and is threaded connection with water blockoff assembly, the depth that after the completion of connection, G.I.H is pre-designed Degree, packer setting switch 5 plays the effect of blowout prevention, suppresses into sleeve pipe E, makes bowl-shape sulfuration packing element 12 under the effect of the pressure It is adjacent to sleeve pipe E inwall, sulfuration packing element 12 inner surface setting angle is that the circular cone of a increased the contact surface with sleeve pipe E inwall Long-pending, that is, improve the active force of bowl-shape sulfuration packing element 12, strengthen the sealing function with sleeve pipe E, fluid pressure passes through certainly simultaneously The hole I that enters to press on sealed packer 1 enters in oil pipe G, cuts off the pin 5-4 of packer setting switch 5, and ball seat moves down certain distance H, switching channels are opened, and oil well liquid is unidirectional to be flowed up, and continue to suppress so that back-off packer 3 sets, slips J opens anchor Fixed, can prevent back-off packer 3, extension spring valve 4, packer setting switch 5 and water blockoff assembly from disengaging, operating personnel pushes big pump Above oil pipe, cuts off the connecting pin C of tapping pin 2 and back-off packer 3, above carries the oil pipe of more than big pump, this system is fixed In well head, when carrying out normal oil producing operation, enable disposably to go into the well oil producing operation.Due to having cut off pin C, so distance A is variable, it is to avoid the pressuring oil pipe situation that oil pipe is produced due to the factor elongation such as heat up, and solves the problems, such as eccentric wear.When repairing During well operations, rise the big pump of oil well pump, from sealed packer 1 and tapping pin 2 so that extension spring valve 4 panel turnover switch F close, realize Blowout prevention in oil pipe.

The present invention is applied to the big pump of oil well pump of oil recovery factory.

Claims

1. a kind of big pumping oil operating system, sits including from sealed packer, tapping pin, back-off packer, extension spring valve and packer Sealing switch, is characterized in that：From the vulcanizate tube inner surface of sealed packer, the circular cone that angle is 12 degree is set；From sealed packer Lower end threaded tapping pin upper end, tapping pin is through back-off packer, extension spring valve and oil pipe and all concentric with three, on tapping pin The linkage section annular projection lower surface at end arranges preset space with the central canal upper surface of back-off packer；The outer tube of tapping pin with lose The central canal of handss packer is connected by pin, and back-off packer lower end is threaded connection the upper end of extension spring valve, and extension spring is lived Door lower end is threaded connection oil pipe, and oil pipe lower end is threaded connection packer setting switch；The master of packer setting switch Internal Place seat, and fixing by pin, reserve between the lower end inner stopper of the lower surface of built-in ball seat and main body certain away from From steel ball is arranged on ball seat port, and pressing plate is connected with main body screw so that steel ball is fixed.

2. big pumping oil operating system according to claim 1, is characterized in that：Under the linkage section annular projection of tapping pin upper end End face is 30mm with the preset space of the central canal upper surface setting of back-off packer.

3. big pumping oil operating system according to claim 1, is characterized in that：Packer setting switchs under built-in ball seat Between the lower end inner stopper of end face and main body, reserved distance is 12mm-20mm.