CN210396689U - Blowout preventer for lifting and lowering sucker rod - Google Patents

Abstract

The utility model relates to a well control instrument technical field that speedily carries out rescue work is a sucker rod blowout preventer down, and it is including the hanger that can reciprocate in the oil pipe coupling, the hanger includes connecting portion, cyclic annular boss, guide frustum and lower connecting portion, goes up connecting portion, cyclic annular boss, guide frustum and lower connecting portion from top to bottom and links as an organic wholely in proper order, and the upper end center of going up connecting portion is equipped with and hangs the screw, and cyclic annular boss external diameter is greater than the external diameter of last connecting portion and can sit and put on the up end of lower part oil pipe or oil pipe nipple joint in the oil pipe coupling. The utility model has the advantages of reasonable and compact structure, convenient to use, it is through with sucker rod upper end fixed mounting at the lower connecting portion lower extreme of hanger, makes the sucker rod sit and hangs in the oil pipe coupling on the up end of lower part oil pipe or oil pipe nipple joint, at oil pipe coupling upper portion installation cock, realizes well head control through closing the cock, has safe and reliable, simple convenient, the characteristics of easily operating.

Description

Blowout preventer for lifting and lowering sucker rod

Technical Field

The utility model relates to an oil field well control instrument technical field that speedily carries out rescue work is a pumping rod blowout preventer plays down.

Background

The oil well pump inspection operation is one of the common projects in well repair maintenance operation and conventional measure operation. Due to the fact that stratum pressure is abnormal, thick oil or crude oil in a pipe column is bonded with a solid phase to form discontinuous blockage in the pipe column, and during the operation of pulling out and putting down the sucker rod, phenomena of discontinuous blasting and crude oil scattering can occur in the oil pipe. At present, when an oil-well pump is inspected and maintained in an oil field development and production well, once the overflow in the oil pipe is found in the operation of pulling down the oil pumping rod, the action of controlling the well mouth is completed by the method of connecting the facilities of the oil pumping rod fastening joint, the polished rod and the blowout prevention box (the length is about 11 meters), the action is completed for about 15 minutes, and the well mouth is opened and faces serious potential safety hazards of environmental pollution, fire and the like. The overflow in the oil pipe is characterized by high overflow speed, the overflow property is oil gas, if the oil pipe is thick, the phenomenon of blasting and scattering spray can occur, so the damage caused is large, if the well head is installed too slowly, the overflow is easily caused, the blowout is out of control, the well site is polluted, and sometimes the oil pipe can be sprayed on a two-layer platform with the height of about 20 meters, so that the oil pipe site is all crude oil, if the spark is generated by the collision of a hook, a hanging ring and a sucker rod with the well head, the fire disaster is easy to occur, the serious result is brought, even the oil gas well is scrapped, and the extremely serious economic loss is caused.

Disclosure of Invention

An object of the utility model is to provide a play down sucker rod blowout preventer, overcome above-mentioned prior art not enough, it can effectively solve current blowout preventer installation steps loaded down with trivial details, the operation wastes time and energy, has the problem of potential safety hazard.

The purpose of the utility model is realized like this: a blowout preventer for tripping the sucker rod is composed of a hanger able to move up and down in the coupling of oil pipe, the hanger comprises an upper connecting part, an annular boss, a guide frustum and a lower connecting part, the upper connecting part, the annular boss, the guide frustum and the lower connecting part are sequentially connected into a whole from top to bottom, an upper hanging screw hole is arranged at the center of the upper end of the upper connecting part, the outer diameter of the annular boss is larger than that of the upper connecting part and can be placed on the upper end face of an oil pipe or an oil pipe nipple at the lower part in an oil pipe coupling, the outer side of the guide frustum is a conical surface with a large upper part and a small lower part, the outer diameter of the upper end of the guide frustum is smaller than that of the annular boss, the outer diameter of the lower end of the guide frustum is equal to that of the, the lower part of the liquid passing groove vertically penetrates through the guide frustum and enables the inner cavities of the oil pipe coupling on the upper part and the lower part of the hanger to be communicated, and the center of the lower end of the lower connecting part is provided with a lower hanging screw hole which can be connected with the upper end of the sucker rod.

Further, the oil rod lifting short circuit is installed on the upper portion of the hanger, the lower end of the oil rod lifting short circuit is provided with a short circuit external thread matched with the upper suspension screw hole, and the oil rod lifting short circuit is fixedly installed together with the upper connecting portion through the short circuit external thread.

Furthermore, the lower part of the hanger is provided with an oil rod buckle adapter which can be connected with the upper end of the oil pumping rod, the upper end of the oil rod buckle adapter is provided with a change external thread matched with the lower hanging screw hole, the oil rod buckle adapter is fixedly installed with the lower connecting part through the change external thread, and the lower end of the oil rod buckle adapter is provided with a change lower thread matched with the upper end thread of the oil pumping rod.

Furthermore, the number of the liquid passing tanks is three, and the liquid passing tanks are arranged at even intervals.

The utility model has the advantages of reasonable and compact structure, convenient to use, it is through with sucker rod upper end fixed mounting at the lower connecting portion lower extreme of hanger, makes the sucker rod sit and hangs in the oil pipe coupling on the up end of lower part oil pipe or oil pipe nipple joint, at oil pipe coupling upper portion installation cock, realizes well head control through closing the cock, has safe and reliable, simple convenient, the characteristics of easily operating.

Drawings

The specific structure of the utility model is given by the following drawings and embodiments:

FIG. 1 is a schematic front view of a half-sectional structure of the present invention;

fig. 2 is a schematic view of the usage state of the present invention.

Legend: 1. the oil pipe coupling, 2, go up connecting portion, 3, cyclic annular boss, 4, guide frustum, 5, lower connecting portion, 6, go up the suspension screw, 7, oil pole promote the short circuit, 8, lower oil pipe or oil pipe nipple joint, 9, cross the cistern, 10, hang the screw down, 11, become detain oil pipe joint, 12, cock, 13, oil pole become to detain the joint.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

Example 1: as shown in figures 1-2, the blowout preventer comprises a hanger which can move up and down in a tubing coupling 1, the hanger comprises an upper connecting part 2, an annular boss 3, a guide frustum 4 and a lower connecting part 5, the upper connecting part 2, the annular boss 3, the guide frustum 4 and the lower connecting part 5 are sequentially connected into a whole from top to bottom, an upper hanging screw hole 6 is arranged at the center of the upper end of the upper connecting part 2, the outer diameter of the annular boss 3 is larger than that of the upper connecting part 2 and can be seated on the upper end surface of a lower tubing or tubing nipple 8 in the tubing coupling 1, the outer side of the guide frustum 4 is a conical surface with a large upper part and a small lower part, the outer diameter of the upper end of the guide frustum 4 is smaller than that of the annular boss 3, the outer diameter of the lower end of the guide frustum 4 is equal to that of the lower connecting part 5, at least one liquid passing groove 9 is arranged on the outer edge of the annular boss 3, the lower part of the liquid passing groove 9, the lower end center of the lower connecting part 5 is provided with a lower hanging screw hole 10 which can be connected with the upper end of the sucker rod. The utility model has the advantages that the upper end of the sucker rod is fixedly arranged at the lower end of the lower connecting part 5 of the hanger, the sucker rod is hung on the upper end surface of the lower oil pipe or the oil pipe nipple 8 in the oil pipe coupling 1, the cock 12 is arranged on the upper part of the oil pipe coupling 1 through the buckle changing oil pipe joint 11, or the cock 12 matched with the thread specification is directly arranged on the upper part of the oil pipe coupling 1, and the well head control can be realized after the cock 12 is closed; the hanger is detachably connected with the upper and lower rod pieces through the upper connecting part 2 and the lower connecting part 5, and the hanger is shorter in length and more light and convenient; the hanger can more easily enter the inner cavity of the lower oil pipe or the oil pipe nipple 8 through the guide frustum 4, and accurate centering can be realized; the well head pressure balance device has the characteristics of safety, reliability, simplicity, convenience and easiness in operation, two persons can finish the well head rush-installation task after skillfully mastering, the hanger can effectively bear the weight of the residual underground sucker rods, the well head pressure can be obtained after overflow shut-in, a circulating kill-job channel is reserved, the well shaft pressure balance can be reestablished, and conditions are created for continuous tripping operation. When the sucker rod is lifted and dropped to overflow in the past, firstly, the polished rod and the blowout prevention box are lifted to a drill floor, 2 well mouth elevators are removed, a small hook lifts 2 large square tiles of the well mouth, the blowout prevention box is placed to the top end of a Christmas tree, the polished rod blowout prevention box and a Christmas tree upper flange are connected, a left production valve and a right production valve are closed, the operation time is about 15-20 minutes, when the sucker rod is lifted and dropped to operate, the speed of a sulfur-containing well and a three-high well is slower than that of other common wells, once the sucker rod overflows, the polished rod with the blowout prevention box needs to be salvaged and connected according to the old method in the; and the utility model discloses through the actual test, after constructor is skilled to master operation flow, only can effectively quick control well head with 3-4 minutes, can effectively shorten and install the well head time, improve the accident handling success rate, reduce control well head use tools cost, effectively stop the well control risk, but wide application in the oil field is repaiied the well and is examined the overflow accident of oil-well pump operation when tripping the sucker rod down.

Example 2: as shown in fig. 1-2, the upper portion of hanger is installed the oil pole and is promoted short circuit 7, and the lower extreme that the oil pole promoted short circuit 7 is equipped with the short circuit external screw thread with last suspension screw 6 matched with, and oil pole promotes short circuit 7 and is in the same place through short circuit external screw thread and upper junction portion 2 fixed mounting. This embodiment promotes 7 installation hangers of short circuit through the oil pole, only screw up the oil pole through the hand and promote short circuit 7 and last connecting portion 2 can, rethread pipe tongs screw up the sucker rod upper end and fix 5 lower extremes of connecting portion under the hanger, make the sucker rod sit hang in tubing coupling 1 on the up end of lower part oil pipe or tubing nipple 8, later unload the oil pole and promote short circuit 7, 1 upper portion through becoming detain tubing coupling 11 installation cock 12 on tubing coupling, perhaps directly install cock 12, can realize well head control after closing cock 12.

Example 3: as shown in fig. 1-2, the lower part of the hanger is provided with an oil rod fastening joint 13 which can be connected with the upper end of the oil pumping rod, the upper end of the oil rod fastening joint 13 is provided with a fastening external thread which is matched with the lower hanging screw hole 10, the oil rod fastening joint 13 is fixedly arranged with the lower connecting part 5 through the fastening external thread, and the lower end of the oil rod fastening joint 13 is provided with a fastening lower thread which can be matched with the upper end thread of the oil pumping rod. This embodiment is used when the upper thread of the sucker rod is not matched with the thread specification of the lower hanging screw hole 10. In the practical use process, blowout prevention exercise and operation program and steps can be performed at ordinary times, before the sucker rod is started, 3-1/2 'EUE tubing nipple is installed from a flange on a wellhead oil production tree to a drilling platform surface, a tubing coupling 1 is installed on the 3-1/2' EUE tubing nipple, a blowout prevention device of 'oil rod lifting short circuit + hanger + oil rod buckle joint' is prepared, once the sucker rod overflows, the well closing operation can be completed within 3-4 minutes according to seven-step well closing programs of sending, stopping, robbing, sitting, lifting, closing and reporting, namely: firstly, an overflow alarm signal is sent out, the operation is stopped, then the blowout preventer is connected in a robbing mode, the hanger is placed on the upper end face of the 3-1/2' EUE oil pipe short section in a lower sitting mode, then an oil rod is disassembled to lift the short connector 7 and lift the lifting hook, then the plug cock is closed after the oil pipe connector and the plug cock are connected in a robbing mode, finally the plug cock is reported to a person responsible for duty, and one-time vertical compression and casing compression are recorded for two minutes.

As shown in fig. 1-2, the number of the liquid passing grooves 9 is three, and the liquid passing grooves 9 are arranged at regular intervals. The three fluid passing grooves 9 make the hanger have better performance for passing the fluid in the tubing coupling 1.

The foregoing description is by way of example only and is not intended as limiting the embodiments of the present invention. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims (5)

1. The utility model provides a play sucker rod blowout preventer down which characterized in that: the hanger comprises an upper connecting part, an annular boss, a guide frustum and a lower connecting part, wherein the upper connecting part, the annular boss, the guide frustum and the lower connecting part are sequentially connected into a whole from top to bottom, an upper hanging screw hole is formed in the center of the upper end of the upper connecting part, the outer diameter of the annular boss is larger than that of the upper connecting part and can be placed on the upper end face of an oil pipe or an oil pipe nipple at the lower part in the oil pipe coupling, the outer side of the guide frustum is a conical surface with a large upper part and a small lower part, the outer diameter of the upper end of the guide frustum is smaller than that of the annular boss, the outer diameter of the lower end of the guide frustum is equal to that of the lower connecting part, at least one liquid passing groove, the lower part of the liquid passing groove vertically penetrates through the guide frustum and enables the inner cavities of the oil pipe coupling on the upper part and the lower part of the hanger to be communicated, and the center of the lower end of the lower connecting part is provided with a lower hanging screw hole which can be connected with the upper end of the sucker rod.

2. The trip rod blowout preventer of claim 1, wherein: the oil rod promotes the short circuit is installed on the upper portion of hanger, and the lower extreme that the oil rod promoted the short circuit is equipped with and hangs screw matched with short circuit external screw thread on, and the oil rod promotes the short circuit and passes through the short circuit external screw thread and be in the same place with last connecting portion fixed mounting.

3. The trip rod blowout preventer of claim 1 or 2, wherein: the oil rod change-over head that can be connected with the sucker rod upper end is installed to the lower part of hanger, and the upper end of oil rod change-over head is equipped with and hangs screw matched with down and becomes to connect the external screw thread, and oil rod change-over head is in the same place with lower connecting portion fixed mounting through becoming to connect the external screw thread, and the lower extreme of oil rod change-over head is equipped with can connect the lower screw thread with sucker rod upper end screw thread matched with.

4. The trip rod blowout preventer of claim 1 or 2, wherein: the number of the liquid passing tanks is three, and the liquid passing tanks are arranged at even intervals.

5. The trip rod blowout preventer of claim 3, wherein: the number of the liquid passing tanks is three, and the liquid passing tanks are arranged at even intervals.

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