CN2564742Y

CN2564742Y - Blow-out and sand prevention downhole valve

Info

Publication number: CN2564742Y
Application number: CN 02274854
Authority: CN
Inventors: 赵春新; 邵洪山; 康永志
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-21
Filing date: 2002-08-21
Publication date: 2003-08-06
Anticipated expiration: 2012-08-21

Abstract

The utility model discloses a spout and sand prevention switch which is used under a well of an oil field. The utility model solves the problem that oil, gas and water are spouted upwards during operation. The utility model is characterized in that a ball valve is arranged between a pump barrel and a fixing valve assembly, and a ball valve switch is controlled by touching an oil pumping rod. When the utility model normally pumps oil, the ball valve is opened, and the oil can be normally pumped; when the utility model is operated, the ball valve is closed. The utility model can effectively prevent the oil, the gas and the water under the well from being spouted, can improve the working environment of operation workers, can leave out difficult working procedures of killing the well by mud, and can reduce operating cost. Simultaneously, the utility model performs a safe function, and is suitable for various oil fields.

Description

The anti-sand control down-hole switch that emits

The utility model relates to instrument under the oil well, belongs to the anti-sand control down-hole switch that emits.

Oil well needs operation in process of production, during operation, needs to propose sucker rod.At this moment the oil in the well, gas, water can return to ground through oil pipe, thereby are sprayed onto on one's body the constructor, pollute construction environment, bring difficulty to construction.When particularly the OIH gas-water pressure is high, also need to carry out kill-job, increase cost of production with mud.Therefore need a valve-type switch, can when operation the OIH air water be closed, but the OIH air water is normally opened, the OIH air water is emerged and the shaft bottom sand returns out when only preventing operation.Up to the present, yet there are no a kind of such switch.

The purpose of this utility model be exactly provide a kind of in order to overcome above-mentioned the deficiencies in the prior art and can when operation, the OIH air water be closed, can be when oil pumping the normal anti-sand control down-hole switch of opening that emits.

The purpose of this utility model reaches by the following technical programs: this anti-sand control down-hole switch that emits, form by top connection, spring, gear, sealing ring and lower contact, be characterized in: top connection is with the urceolus that is threaded, the seating nipple in carry potential overflow hole, upper surface is housed in the urceolus, has tooth bar on the hypomere sidewall of seating nipple; Support upper valve base with spring in the seating nipple, upper valve base cooperates by the valve ball of sealing ring with the band mesopore, and the valve ball lower end cooperates with lower valve base by sealing ring, and the lower valve base lower end holds out against with lower contact, and lower contact is with the urceolus that is threaded; Valve ball is with the gear shaft fixed gear, and gear is meshed with the tooth bar of seating nipple hypomere.

The utility model can have following advantage than prior art: because valve ball has mesopore, drive its rotation by the rack-and-pinion engagement, revolution 90 degree with regard to switch once, thereby switch arbitrarily.When operation, can stop downhole oil, gas, going up of water to be sprayed effectively, improve the working environment of workers, cut the loaded down with trivial details operation of mud lubrication, reduce operating cost, play safety effect simultaneously.When normal the oil recovery, valve ball is opened, and can carry out ordinary production.

Accompanying drawing 1 is a structure chart of the present utility model;

Accompanying drawing 2 is partial enlarged views of the utility model Fig. 1.

The utility model is described in further detail below in conjunction with accompanying drawing:

By Fig. 1 in conjunction with shown in Figure 2, the anti-sand control down-hole switch that emits of this kind, form by top connection 1, spring 3, gear 8, sealing ring 6 and lower contact 10, be characterized in: top connection 1 is with the urceolus 4 that is threaded, the seating nipple 2 in carry potential overflow hole, upper surface is housed in the urceolus 4, has tooth bar on the hypomere sidewall of seating nipple 2; Support upper valve base 5 with spring 3 in the seating nipple 2, upper valve base 5 cooperates by the valve ball 11 of sealing ring 6 with the band mesopore, and valve ball 11 lower ends cooperate with lower valve base 9 by sealing ring 6, and lower valve base 9 lower ends hold out against with lower contact 10, and lower contact 10 is with the urceolus 4 that is threaded; Valve ball 11 is with gear shaft 7 fixed gears 8, and gear 8 is meshed with the tooth bar of seating nipple 2 hypomeres.

During use, the standing valve assembly of the oil well pump of will waiting earlier to go into the well unloads, and the pump barrel lower end is linked to each other with top connection 1 of the present utility model, the standing valve assembly is connected in the utility model lower contact, afterwards with the pump G.I.H again.Instantly behind the precalculated position,, open switch, adjust then, make the oil well pump operate as normal towards distance by the shake-up of sucker rod.Operation rises before the pipe, puts down sucker rod earlier, touches this switch again, and it is closed, and reaches the kill-job effect.

Claims

1. the anti-sand control down-hole switch that emits, form by top connection (1), spring (3), gear (8), sealing ring (6) and lower contact (10), it is characterized in that: top connection (1) is with the urceolus that is threaded (4), the seating nipple (2) in carry potential overflow hole, upper surface is housed in the urceolus (4), has tooth bar on the hypomere sidewall of seating nipple (2); Support upper valve base (5) with spring (3) in the seating nipple (2), upper valve base (5) cooperates by the valve ball (11) of sealing ring (6) with the band mesopore, valve ball (11) lower end cooperates with lower valve base (9) by sealing ring (6), lower valve base (9) lower end holds out against with lower contact (10), and lower contact (10) is with the urceolus that is threaded (4); Valve ball (11) is with gear shaft (7) fixed gear (8), and gear (8) is meshed with the tooth bar of seating nipple (2) hypomere.