CN102704907A

CN102704907A - Oil well gas anchor

Info

Publication number: CN102704907A
Application number: CN2012102077742A
Authority: CN
Inventors: 李德传; 刘坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-16
Filing date: 2012-06-16
Publication date: 2012-10-03

Abstract

The invention discloses an oil well gas anchor. An outer connection through groove is formed in the side surface at the upper part of an outer cylinder; an inner connection through groove is formed in the side surface of a tap; the tap is fixed inside the upper part of the outer cylinder; the inner connection through groove faces to the outer connection through groove; the upper part of the outer cylinder is connected with the lower part of an upper joint; the tap is internally provided with an oil outlet eccentric hole and an exhaust eccentric hole; the exhaust eccentric hole is communicated with the inner connection through groove and the outer connection through groove; a vent valve ball is placed in the exhaust eccentric hole; the upper end of an oil outlet pipe is installed in the exhaust eccentric hole of the tap, and the oil outlet pipe is integrally fixed with the tap and communicated with the inside of the upper joint through the exhaust eccentric hole, and is placed inside the outer cylinder; the lower part of a mixed liquid inlet pipe is mounted in an eccentric hole of a lower joint; the mixed liquid inlet pipe is communicated with the lower part of the lower joint, and is inserted in the outer cylinder; the upper part of the lower joint is connected with the lower part of the outer cylinder; the oil outlet pipe and the mixed liquid inlet pipe are placed inside the outer cylinder parallelly, so as to form an overflowing passage inside the outer cylinder; and the overflowing passage is communicated with the lower part of the oil outlet pipe and communicated with the upper part of the mixed liquid inlet pipe.

Description

The pumpingh well gas anchor

Technical field

The present invention is the underground equipment of oilfield production usefulness, particularly a kind of pumpingh well gas anchor.

Background technology

In oil well, the well air content that has is big, and when pumping with oil well pump, the gas-liquid ratio that gets in the oil well pump is big, reduces well liquid discharge capacity, and oil well output is low, and pump efficiency is low, and after air content surpassed certain value, oil well pump also gas lock can take place, and causes oil well not fuel-displaced.In order to reduce the influence of gas to oil well pump work; The oil field often is employed in to install under the pump and utilizes the gas anchor of slippage effect and Gravity Separation simply to separate, and prevents that gas from getting in the pump, though this gas anchor has certain effect; But for the big oil well weak effect of air content, can not sand block, sub-sand.The multistage separating gas anchor is adopted at the scene sometimes, though certain liquid gas separating effect is arranged, complex structure, cost of production is high, can not sand block, sub-sand, can't resolve the influence of sand to oil pumping.

Summary of the invention

The purpose of this invention is to provide a kind of pumpingh well gas anchor, be installed under the oil well pump in the pumpingh well, gas-liquid sand is separated, reduce the gas that gets into oil well pump, improve the pump efficiency of oil well pump, improve the oil well economic benefit.

The objective of the invention is to realize like this: comprise top connection, tap, flowline, urceolus, lower contact, exhaust valve ball, mix feed tube, the urceolus upper side has and outreaches groove, and the tap side has inline groove; Tap is fixed in the urceolus top, and inline groove is aimed at and outreached groove, and urceolus top is connected with the top connection bottom; Top connection is a hollow structure, and internal thread is arranged at top connection top, and fuel-displaced eccentric orfice, exhaust eccentric orfice are arranged in the tap; The exhaust eccentric orfice with inline groove, outreach groove and communicate, lay the exhaust valve ball in the exhaust eccentric orfice, the exhaust valve ball makes exhaust eccentric orfice, inline groove, outreaches unidirectional the communicating of passage that groove forms; The flowline upper end is installed in the fuel-displaced eccentric orfice of tap, and is fixed into one with tap, and flowline communicates with top connection inside through fuel-displaced eccentric orfice; Flowline is in the urceolus, mixes the feed tube bottom and is installed in the eccentric orfice of lower contact, mixes feed tube and communicates with the lower contact bottom; Mixing feed tube inserts in the urceolus; Lower contact top is connected with the urceolus bottom, flowline, mixes that feed tube is parallel to be in the urceolus, makes and forms flow channels in the urceolus; Flow channels communicates with the flowline bottom, and flow channels communicates with mixing feed tube top.

The invention has the beneficial effects as follows: after liquid vapour mixture was discharged from mixing feed tube upper end, fluid diversion flowed downward, during fluid diversion; Gas-liquid separation, the gas of separating is opened the exhaust valve ball, through exhaust eccentric orfice, inline groove, outreach groove and inwardly drain into oil well cover; Liquid flows downward in flow channels, upwards flows by the oil well pump extraction through flowline, fuel-displaced eccentric orfice, top connection, and gas-liquid mixture had been realized high efficiency separation before the well flow was advanced oil well pump; Good separating effect has reduced the gas that gets into oil well pump, can improve the pump efficiency of oil well pump; The bottom also can hang downhole tools such as considering sandpipe and realize functions such as sand control, has remarkable economic efficiency.

Description of drawings

Fig. 1 is an assembling drawing of the present invention.

Fig. 2 is the profile after cutting open from A-A among Fig. 1.

Fig. 3 is the profile after cutting open from B-B among Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing embodiments of the invention are described.

Can be known that by figure embodiments of the invention comprise top connection 1, tap 2, flowline 5, urceolus 6, lower contact 8, exhaust valve ball 11, mix feed tube 13, urceolus 6 upper side have and outreach groove 9; Tap 2 sides have inline groove 10, and tap is fixed in urceolus 6 tops, and inline groove 10 is aimed at and outreached groove 9; Urceolus 6 tops are connected with top connection 1 bottom, and top connection 1 is a hollow structure, and internal thread is arranged at top connection 1 top; Be connected with the oil well pump lower contact, 2 li of taps have fuel-displaced eccentric orfice 3, exhaust eccentric orfice 4, exhaust eccentric orfice 4 with inline groove 10, outreach groove 9 and communicate; Exhaust eccentric orfice 4 tops do not communicate with top connection 1, and the exhaust eccentric orfice is laid exhaust valve ball 11 for 4 li, and exhaust valve ball 11 makes exhaust eccentric orfice 4, inline groove 10, outreaches unidirectional the communicating of passage that groove 9 forms; Gas can only be through exhaust eccentric orfice 4, inline groove 10, outreach groove 9 discharges in the sleeve pipe of oil well; Can not outreach groove 9, inline groove 10, exhaust eccentric orfice 4 from oil well casing and get into inwards under the exhaust valve ball 11, flowline 5 upper ends are installed in 3 li of the fuel-displaced eccentric orfices of tap 2, and are fixed into one (because the lower end is in suspension status) with tap 2; Flowline 5 communicates with top connection 1 inside through fuel-displaced eccentric orfice 3; Flowline 5 is in the urceolus 6, mixes feed tube 13 bottoms and is installed in the eccentric orfice of lower contact 8, mixes feed tube 13 and communicates with lower contact 8 bottoms; Mixing feed tube 13 inserts in the urceolus 6; Lower contact 8 tops are connected with urceolus 6 bottoms, and flowline 5, mixing feed tube 13 parallel being in the urceolus 6 make and form flow channels 14 in the urceolus 6; Flow channels 14 communicates with flowline 5 bottoms, and flow channels 14 communicates with mixing feed tube 13 tops.Feed liquor sieve aperture 7 is arranged at flowline 5 bottoms, makes it form Jamin effect, reduces not separated gas and gets into flowline 5, and gas can be again to flowing out through outreaching groove 9.Mixing feed tube 13 tops has fluid sieve aperture 12, makes it form Jamin effect, reduce gas after 12 li outflows of fluid sieve aperture to descending, gas is upwards flowed out through outreaching groove 9.

Gas-liquid mixture changes in the present invention that the gravitational difference between gas-liquid mixture and slippage effect realize the high efficiency separation between liquid, gas when flowing to; Isolated gas is expelled in the sleeve pipe, and gas can not get in the oil well pump, has avoided the influence of gas to oil well pump; Well liquid is from lower contact 8 inner entering; Be different from common gas anchor feed liquor from the side, therefore, the bottom also can hang downhole tools such as considering sandpipe and realize functions such as sand control.

Claims

1. pumpingh well gas anchor is characterized in that: it is characterized in that: comprise top connection (1), tap (2), flowline (5), urceolus (6), lower contact (8), exhaust valve ball (11), mix feed tube (13), urceolus (6) upper side has and outreaches groove (9); Tap (2) side has inline groove (10), and tap is fixed in urceolus (6) top, and inline groove (10) is aimed at and outreached groove (9); Urceolus (6) top is connected with top connection (1) bottom, and top connection (1) is a hollow structure, and internal thread is arranged at top connection (1) top; There are fuel-displaced eccentric orfice (3), exhaust eccentric orfice (4) in tap (2) lining; Exhaust eccentric orfice (4) with inline groove (10), outreach groove (9) and communicate, exhaust valve ball (11) is laid in exhaust eccentric orfice (4) lining, exhaust valve ball (11) makes exhaust eccentric orfice (4), inline groove (10), outreaches unidirectional the communicating of passage that groove (9) forms; Flowline (5) upper end is installed in fuel-displaced eccentric orfice (3) lining of tap (2); And be fixed into one with tap (2), and flowline (5) communicates with top connection (1) inside through fuel-displaced eccentric orfice (3), and flowline (5) is in the urceolus (6); Mixing feed tube (13) bottom is installed in the eccentric orfice of lower contact (8); Mix feed tube (13) and communicate with lower contact (8) bottom, mix feed tube (13) and insert in the urceolus (6), lower contact (8) top is connected with urceolus (6) bottom; Flowline (5), parallel being in the urceolus (6) of mixing feed tube (13); Make to form flow channels (14) in the urceolus (6), flow channels (14) communicates with flowline (5) bottom, and flow channels (14) communicates with mixing feed tube (13) top.

2. pumpingh well gas anchor according to claim 1 is characterized in that: feed liquor sieve aperture (7) is arranged at flowline (5) bottom.

3. pumpingh well gas anchor according to claim 1 is characterized in that: mixing feed tube (13) top has fluid sieve aperture (12).