CN202866753U

CN202866753U - Electromagnetic type switch device for finding water shutoff under shaft

Info

Publication number: CN202866753U
Application number: CN 201220451682
Authority: CN
Inventors: 张俊亮; 韩进; 张强德; 曹海燕; 李丽云; 张艳勋
Original assignee: China Petroleum and Chemical Corp; Oil Production Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co Ltd
Current assignee: China Petroleum and Chemical Corp; Oil Production Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co Ltd
Priority date: 2012-09-06
Filing date: 2012-09-06
Publication date: 2013-04-10
Anticipated expiration: 2022-09-06

Abstract

The utility model discloses an electromagnetic type switch device for finding water shutoff under the shaft. The electromagnetic type switch device is composed of a connecting pipe, a control cabinet short section, a power supply, a control circuit, a pressure sensor, a connector, a piston bush, a piston, a one-way valve and a piston rod returning spring. The lower portion of the piston bush is provided with a piston liquid inlet and a piston liquid outlet. A main electromagnet, the piston and the piston rod returning spring are sequentially mounted in a central through hole of the piston bush from top to bottom. A limiting ring is arranged at the upper end of the piston, and the middle portion of the piston is a hole shrinkage segment. The side pipe wall of the piston bush is provided with an eccentric hole which is communicated with the central through hole of the piston bush. A limiting device is mounted at the eccentric hole of the piston bush. The connector is provided with a conduction hole and a passing hole in the axial direction, wherein the conduction hole enables the connecting pie to be communicated with an inner cavity of the control cabinet short section so as to receive pressure signals under the shaft, and the passing hole is communicated with the inner cavity of the control cabinet short section to enable a drive motor system circuit in the control cabinet short section to be connected with the main electromagnet. Due to the fact that the main electromagnet is adopted for driving the piston to move, the electromagnetic type switch device for finding the water shutoff under the shaft is simple and reliable in structure, and capable of achieving a long-time and reliable layering water shutoff finding process in a production state of an oil well.

Description

The water blocked switch device is looked in the electromagnetic type down-hole

Technical field

The utility model discloses a kind of electromagnetic type down-hole and look for the water blocked switch device, belong to the layering of oil extraction in oil field engineering oil well and look for water blockoff corollary apparatus technical field, particularly the high oil well random layer of moisture content position looks for water clogging tool.

Background technology

Late period of oil field, water ratio in oil well rise, and need close high aquifer formation in oil recovery process, open low aquifer and produce, and it is to be installed between the packer of down-hole string that the water blocked switch device is looked in the down-hole, carries out the separate zone water shutoff operation.The down-hole of using both at home and abroad at present looks for the water blocked switch type many, fixed tubular column intelligence looks for water blocked switch mainly to adopt " drive motors+drive screw+switch valve " to form, service time of battery is long, power consumption causes battery life short more, and the performance requirement to drive motors heatproof, torque etc. is higher simultaneously." DH intellectual contactor " that Chinese patent " ZL 2007200848058.4 " is introduced is exactly wherein a kind of, this intelligent switch can be realized fixed tubular column, realize that under production status the stratum opens and closes, but in the process of switch, performance requirement to drive motors is higher, battery power consumption causes battery life short more simultaneously, has affected the period of validity that whole string is looked for the water blocked switch tubing string.

The utility model content

The purpose of this utility model is to be subjected to drive motors performance, battery loss amount to cause the short shortcoming of tubing string period of validity in order to overcome the derailing switch that is comprised of " drive motors+drive screw+switch valve " more, provides a kind of and can realize reliably under the oil well production state that layering looks for the electromagnetic type down-hole of water-plugging technology to look for the water blocked switch device.

The utility model is comprised of tube connector, control cabinet pipe nipple, power supply, control circuit, pressure sensor, joint, piston bush, piston, one way valve, piston rod back-moving spring, the tube connector upper/lower terminal is the tubing thread screw thread, the tube connector bottom has central recess, have the feed pathway that is communicated with central recess on its sidewall, one way valve is installed in the feed pathway, on the central recess of tube connector, is connected with piston bush, joint and control cabinet pipe nipple in turn by screw thread; The piston bush bottom has piston inlet and piston liquid outlet, main electromagnet, piston, piston rod back-moving spring from top to bottom are installed in the central through hole of piston bush successively, the piston upper end is spacing ring, the middle part is for being the undergauge section, the side pipe wall of piston bush has the eccentric orfice that communicates with its central through hole, at its eccentric orfice stopping means is installed; Axially have conduction mouth and via hole on the joint, the conduction mouth can make tube connector be communicated with control cabinet pipe nipple inner chamber and accept the down-hole pressure signal, and via hole is communicated with control cabinet pipe nipple inner chamber, and control cabinet pipe nipple controlling system circuit is connected with main electromagnet.

Stopping means is comprised of secondary electromagnet, gag lever post, gag lever post back-moving spring, release link, release link back-moving spring.

Beneficial functional of the present utility model is: adopt the solenoid actuated piston movement, simple in structure, reliable, power consumption of switch is low, can realize under the oil well production state that reliable layering of long period looks for water-plugging technology.

Description of drawings

Fig. 1 is the utility model structural representation;

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done concrete description:

Referring to Fig. 1, the utility model is comprised of tube connector 1, control cabinet pipe nipple 2, power supply 3, control circuit 4, pressure sensor 5, joint 7, piston bush 9, piston 15, one way valve 19, piston rod back-moving spring 21, tube connector 1 upper/lower terminal is the tubing thread screw thread, tube connector 1 bottom has central recess, have the feed pathway 20 that is communicated with central recess on its sidewall, one way valve 19 is installed in the feed pathway 20, on the central recess of tube connector 1, is connected with piston bush 9, joint 7 and control cabinet pipe nipple 2 in turn by screw thread; Piston bush 9 bottoms have piston inlet 18 and piston liquid outlet 16, main electromagnet 8, piston 15, piston rod back-moving spring 21 from top to bottom are installed in the central through hole of piston bush 9 successively, piston 15 upper ends are spacing ring, the middle part is for being the undergauge section, the side pipe wall of piston bush 9 has the eccentric orfice that communicates with its central through hole, at its eccentric orfice stopping means is installed; Axially have conduction mouthful 6a1 and via hole 6a2 on the joint 7, a conduction mouthful 6a1 can make tube connector 1 be communicated with control cabinet pipe nipple 2 inner chambers and accept the down-hole pressure signal, via hole 6a2 is communicated with control cabinet pipe nipple 2 inner chambers, and control cabinet pipe nipple 2 controlling system circuits are connected with main electromagnet 8.

Described stopping means is comprised of secondary electromagnet 10, gag lever post 11, gag lever post back-moving spring 12, release link 13, release link back-moving spring 14.

The utility model and packer, plug, give up etc. formed water detecting and plugging pipe column, give up behind the packer setting, in the certain hour section, suppress the switch of looking for the water blocked switch device under the number of times control well by well head, when force value is in 5MPa to 10MPa scope, receive the pulse signal that well head is suppressed by pressure sensor 5, identify and control according to number of pulses the sequential of main electromagnet 8 or secondary electromagnet 10 power on/off by control circuit 4.As set 10 minutes inner control circuits 4 and receive 5 pulse signals and then drive main electromagnet 8 energisings, when thereby driven plunger 15 goes upward to upper limit position, gag lever post 11 enters under the effect of gag lever post back-moving spring 12 in piston 15 spacing rings, main electromagnet 8 outages, piston inlet 18 is closed by piston 15; Receive 8 signals in 10 minutes, then drive 10 energisings of secondary electromagnetism, release link 13 is moved under magneticaction, eccentric orfice on the side pipe wall of driving gag lever post 11 retraction piston bushs 9, piston 15 is after going downwards to the lower position under 21 effects of piston rod back-moving spring, secondary electromagnet 10 outages, piston inlet 18 is communicated with by plug sleeve annular space 17 with piston liquid outlet 16.Transmit pulse signal by " suppressing-pressure release-suppress-pressure release ... ", control main electromagnet 8 and secondary electromagnet 10 are switched on and conduction times, and set according to theoretical calculation and test conduction time, guarantees the opening and closing of switch.

Claims

1. the water blocked switch device is looked in the electromagnetic type down-hole, by tube connector (1), control cabinet pipe nipple (2), power supply (3), control circuit (4), pressure sensor (5), joint (7), piston bush (9), piston (15), one way valve (19) forms, on the tube connector (1), lower two ends are the tubing thread screw thread, tube connector (1) bottom has central recess, on the central recess of tube connector (1), be connected with piston bush (9) in turn by screw thread, joint (7) and control cabinet pipe nipple (2), it is characterized in that: have the radially feed pathway (20) that is communicated with its central recess on the sidewall of tube connector (1), one way valve (19) is installed in the feed pathway (20); Piston bush (9) bottom has piston inlet (18) and piston liquid outlet (16), main electromagnet (8), piston (15), piston rod back-moving spring (21) from top to bottom are installed in the central through hole of piston bush (9) successively, piston (15) upper end is spacing ring, the middle part is the undergauge section, the side pipe wall of piston bush (9) has the eccentric orfice that communicates with its central through hole, in its eccentric orfice stopping means is installed; Axially have conduction mouthful (6a1) and via hole (6a2) on the joint (7), conduction mouthful (6a1) can make tube connector (1) be communicated with control cabinet pipe nipple (2) inner chamber, via hole (6a2) is communicated with control cabinet pipe nipple (2) inner chamber, and control cabinet pipe nipple (2) controlling system circuit is connected with main electromagnet (8).

2. the water blocked switch device is looked in electromagnetic type as claimed in claim 1 down-hole, and it is characterized in that: stopping means is comprised of secondary electromagnet (10), gag lever post (11), gag lever post back-moving spring (12), release link (13), release link back-moving spring (14).