CN201065754Y

CN201065754Y - Oil-well pump sand-proof device

Info

Publication number: CN201065754Y
Application number: CNU2007200255171U
Authority: CN
Inventors: 申宏; 王勇
Original assignee: DONGYING TIEREN PETROLEUM EQUIPMENT Co Ltd
Current assignee: DONGYING TIEREN PETROLEUM EQUIPMENT Co Ltd
Priority date: 2007-07-18
Filing date: 2007-07-18
Publication date: 2008-05-28
Anticipated expiration: 2017-07-18

Abstract

The utility model relates to an anti-sand device of oil sucker pump for oil well, which is characterized in comprising an internal system and an external system; wherein, the internal system mainly comprises a double female connector, a locking connector, a locking rod, a pin connector and a slick rod; while the external system mainly comprises a connector, an anti-sand sealing head, a coupling, a shear pin, a sand sink device and a crossover connector; the sand sink devices are connected through the coupling; the top is connected with an upper oil tube via connector, and the bottom is connected with an oil pump via the crossover connector; the anti-sand sealing head is fixed through the connection of the shear pin and the sand sink device at the top. The utility model has the advantages that: firstly, sand in the crude oil of the tubing-casing can be settled in the interlay of the outer tube, and the accident for sand stuck pipe string can be effectively avoided; secondly, the problem that sand in the crude oil is settled to the piston in the process of oil pumping is also effectively avoided; thus the operation environment for oil pump is greatly improved, and the service life of the oil pump is prolonged.

Description

Oil well pump sand control card device

One, technical field:

The utility model relates to a kind of underground work device of petroleum industry, particularly relates to a kind of various oil well pump sand control card devices that utilize the oil well that oil well pump recovers the oil that are applicable to.

Two, background technology:

In the nonflowing well oil recovery process in oil field, because many oil wells all shake out, the crude oil that promptly utilizes the oil well pump extraction in various degree contain sand, because the proportion of sand is bigger, constantly sink at the oil recovery process medium sand, the wearing and tearing of pump have been increased, if, very easily cause the generation of holddown accident because various factors causes power failure.In order to solve the oil well pump wear problem, relevant technologies personnel had once designed sand-preventing pump, long-plunger pump etc., though these schemes have solved some problems to a certain extent, for pump since the sand card problem cause that has a power failure still can not solve.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of oil well pump sand card problem that solves in the nonflowing well oil recovery process is provided, and the oil well pump sand control card device of the wearing and tearing of reduction oil well pump that can be in various degree.

Its technical scheme is: mainly be made up of built-in system and external system, built-in system mainly is made up of two female joints, lock-on connection, check lock lever, make-up joint, polished rod; Described pair of female joint flexibly connects with the check lock lever that is set with lock-on connection, polished rod upper end and make-up joint flexibly connect, the lower end is connected with sucker rod, and sucker rod can directly connect oil well pump, and salvaging mechanism and the make-up joint be made up of lock-on connection and check lock lever flexibly connect;

External system mainly by joint, sand control seal head, box cupling, cut off pin, sand setting device and crossover sub and form, described sand setting device connects by box cupling, top is connected with the top oil pipe by joint, and the bottom then utilizes crossover sub to link to each other with the oil well pump of bottom; And the utilization of sand control seal head is cut off the upper end of pin and sand setting device and is connected and fixed.

The sand setting device mainly is made up of last sand sediment pipe, main sand-precipitating tube and following sand-precipitating tube, and described upward sand sediment pipe, main sand-precipitating tube are connected by box cupling respectively with following sand-precipitating tube.

Described upward sand sediment pipe, main sand-precipitating tube are connected by box cupling respectively with following sand-precipitating tube, and outside " O " RunddichtringO that uses seals, and inside is seal ring seal then.

The bottom of described lock-on connection has many grooves, and check lock lever is a pyramidal structure, is used for docking with the make-up joint.

The beneficial effects of the utility model are: 1, utilize the present invention can make in the oil jacket annular space containing in the outer tube interlayer that sand is deposited in the sand setting device in the crude oil, effectively prevent the generation of sand card tubing string accident; 2, since this device make pump in oil pumping process oil well pump piston and top crude oil in different chamber work, can prevent effectively that pump sand in the crude oil in oil pumping process from sinking on the piston, thereby can improve the working environment of oil well pump greatly, prolong the application life of pump.

Four, description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is structural representations of sand setting device of the present utility model;

In the accompanying drawing: two female joints 1, lock-on connection 2, check lock lever 3, make-up joint 4, special polished rod 5, special joint 6, " O " RunddichtringO 7,9,14,18, special pipe nipple 8, sand control seal head 10, special box cupling 11, cut off pin 12, go up sand sediment pipe 13, joint ring 14, main sand-precipitating tube 15, sand-precipitating tube 16, crossover sub 17 down.

Five, the specific embodiment:

In conjunction with the accompanying drawings 1 and 2, the utility model will be further described:

This device comprises built-in system and external system two big systems; Built-in system mainly comprises: two female joints 1, lock-on connection 2, check lock lever 3, make-up joint 4, special polished rod 5 etc.External system mainly comprises: special joint 6, " O " RunddichtringO 7,9,14,18, special pipe nipple 8, sand control seal head 10, special box cupling 11, cut off pin 12, go up sand sediment pipe 13, joint ring 14, main sand-precipitating tube 15, sand-precipitating tube 16, crossover sub 17 etc. down;

Two female joints 1 of built-in system are leaned on screwed connection with the check lock lever that is set with lock-on connection 23, special polished rod 5 upper ends and make-up joint 4 utilize screwed connection, the lower end is connected with sucker rod, sucker rod can directly connect oil well pump, the bottom of lock-on connection 2 has some grooves, and check lock lever 3 is pyramidal structures, and the salvaging mechanism of being made up of lock-on connection 2 and check lock lever 3 can be realized and the docking of make-up joint 4 easily.

External system mainly comprises: go up sand sediment pipe 13,, main sand-precipitating tube 15, sand setting device and the compositions such as special joint 6 and crossover sub 17 formed of sand-precipitating tube 16 down, connect by special box cupling 11 between each sand-precipitating tube, outside " O " RunddichtringO that uses seals, then joint ring 14 sealings of inside, sand-precipitating tube connects the upper back and utilizes screw thread to be connected with the top oil pipe by special joint 6, and the bottom then utilizes crossover sub to lean on the oil well pump of screw thread and bottom to link.Novel oil well pump sand control card device utilizes crossover sub to lean on screw thread to be connected with the pump barrel of oil well pump during use, and with in the pump barrel lower going-into-well, after in the whole lower going-into-wells of external system, this moment is being with sand control seal head 10 in advance and being connected with the built-in system G.I.H of make-up joint 4 with the top that sucker rod and piston link on polished rod 5, and 10 utilizations of sand control seal head cut off pin 12 and last sand sediment pipe 13 is connected and fixed.Normally be lowered to oil pipe this moment, after arriving desired depth, two female joints 1, lock-on connection 2 and check lock lever 3 are connected the sucker rod bottom with in the sucker rod lower going-into-well, after arriving the precalculated position, press down sucker rod, lock-on connection 2 and check lock lever 3 can enter into make-up joint 4 and automatic locking, propose the operation of can pumping behind the dead space on this moment; In addition, two ends of the present invention all are processed with tubing thread, upper and lowerly all can directly link to each other with oil pipe, make Job Operations very convenient.

Claims

1. oil well pump sand control card device, it is characterized in that: mainly be made up of built-in system and external system, built-in system mainly is made up of two female joints (1), lock-on connection (2), check lock lever (3), make-up joint (4), polished rod (5); Described pair of female joint (1) flexibly connects with the check lock lever (3) that is set with lock-on connection (2), polished rod (5) upper end and make-up joint (4) flexibly connect, the lower end is connected with sucker rod, sucker rod can directly connect oil well pump, goes out salvaging mechanism and make-up joint (4) flexible connection that lock-on connection (2) and check lock lever (3) are formed;

External system mainly by joint (6), sand control seal head (10), box cupling (11), cut off pin (12), sand setting device and crossover sub (17) and form, described sand setting device connects by box cupling (11), top is connected with the top oil pipe by joint (6), and the bottom then utilizes crossover sub (17) to link to each other with the oil well pump of bottom; And sand control seal head (10) utilizes the upper end cut off pin (12) and sand setting device to be connected and fixed.

2. oil well pump sand control card device according to claim 1, it is characterized in that: the sand setting device mainly is made up of last sand sediment pipe (13), main sand-precipitating tube (15) and following sand-precipitating tube (16), and described upward sand sediment pipe (13), main sand-precipitating tube (15) are connected by box cupling (11) respectively with following sand-precipitating tube (16).

3. oil well pump sand control card device according to claim 2, it is characterized in that: described upward sand sediment pipe (13), main sand-precipitating tube (15) are connected by box cupling (11) respectively with following sand-precipitating tube (16), and outside " O " RunddichtringO that uses seals, then joint ring (14) sealing of inside.

4. oil well pump sand control card device according to claim 1 is characterized in that: the bottom of described lock-on connection (2) has many grooves, and check lock lever (3) is a pyramidal structure, is used for docking with make-up joint (4).