Oil leakage prevention device of closed blowout prevention box
Technical Field
The utility model belongs to the technical field of oil gas field development, concretely relates to airtight prevent spouting box leak protection oil device for in formation testing swabbing construction operation.
Background
The blowout prevention box is used as a novel wellhead sealing device and is widely applied to the oil field operation process, particularly the coiled tubing equipment operation. However, when the conventional sealed blowout prevention box is used for pumping, the sealed blowout prevention box cannot scrape oil and water on the steel wire rope, so that the oil and water splash at the guide wheel and scatter to the ground, and pollution is caused.
More importantly, in the well testing operation of the ultra-deep high-pressure oil and gas well, the sealing packing rubber ring of the existing blowout prevention box is easily unsealed due to the long-term abrasion of the steel wire and the high pressure of the oil and gas well, and the puncture accident happens occasionally, even the well control accident is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can effectively reduce airtight box leak protection oil device of preventing spouting of environmental protection risk has solved and has prevented that airtight box of preventing spouting can't scrape the profit on the wire rope at the pumping in-process, leads to the profit to splash in leading wheel department, and the ground that scatters causes the problem of pollution, greatly reduced the crude oil pollution risk that the pumping brought, reached clean production requirement.
The utility model discloses the technical scheme who adopts as follows:
an oil leakage prevention device of a closed blowout prevention box comprises an oil collection box, a packing box, an oil return pipeline, a steel wire rope righting wheel, a righting wheel fixing device and a swabbing steel wire rope,
an iron plate is arranged at the top of the oil collection box, a packing box is fixed on the iron plate, the bottom of the oil collection box is connected with an oil return pipeline through an oil return pipeline joint, two steel wire rope centering wheels are arranged in the oil collection box, the two steel wire rope centering wheels are symmetrically arranged side by side, a gap is reserved between the two steel wire rope centering wheels, the middle parts of the two steel wire rope centering wheels are respectively connected with the inner wall of the oil collection box through a central shaft, and a centering wheel fixing device is arranged below the gap between the two steel wire rope centering wheels; the swabbing steel wire rope penetrates through the packing box and extends downwards to a gap between the two steel wire rope righting wheels.
The packing box includes the packing box body, the top of packing box body is equipped with the packing box lid, this internal packing that is equipped with of packing box, the packing with the packing box lid is connected, the bottom of packing box body is equipped with the packing fixed plate, the packing box passes through the packing fixed plate is fixed on the collection oil box.
And the swabbing steel wire rope penetrates into the packing from the upper part of the packing box cover and penetrates through the packing fixing plate to extend downwards to a gap between the two steel wire rope righting wheels.
The packing fixing plate is fixed on the iron plate through bolts.
The packing box body is a hollow cylinder with the inner diameter of 66mm and is connected with the packing box cover through screw threads.
The oil collecting box is a rectangular iron box formed by welding thin iron plates with the thickness of 3 mm.
The bottom of the oil collecting box is connected with the oil return pipeline joint in a welding mode.
The righting wheel fixing device at least comprises a righting wheel fixing seat, two fixing grooves are formed in the side face of the righting wheel fixing seat, the two fixing grooves are respectively in one-to-one symmetry with the two steel wire rope righting wheels, the bottom of each steel wire rope righting wheel can be matched with the fixing groove corresponding to the steel wire rope righting wheel, nuts are symmetrically arranged in the fixing grooves in the left and right directions, the nuts are fixed in the fixing grooves through connecting rods, screw rods are further connected to the nuts, one ends of the screw rods are in threaded connection with the nuts, the other ends of the screw rods penetrate through the fixing grooves and extend out of the fixing grooves, and nuts are arranged at one ends of the screw rods extending out.
The symmetric axis of the two steel wire rope righting wheels and the center of the righting wheel fixing device are both positioned on the central line of the packing box.
One end of the oil return pipeline, which is far away from the oil collecting box, is connected with a swabbing tank of the closed blowout prevention box.
Therefore, the utility model has the advantages that:
1. through being equipped with collection oil box, packing box and time oil pipe line, can catch the oil, the water that splash out, then concentrate the recovery to can solve the problem that righting wheel department oil, water fall to the ground well. The device has greatly reduced the crude oil pollution risk that the swabbing brought through effectively solving the problem that leading wheel department oil, water fall to the ground, has reached the clean production requirement.
2. The bottom of the oil collecting box is connected with the oil return pipeline joint in a welding mode, and the connection is very fixed, so that the oil return pipeline joint is prevented from being disconnected with the bottom of the oil collecting box, and leakage of oil and water is avoided.
3. Through being equipped with packing box lid, when the round hole at packing center was worn and torn the grow, we can extrude packing rubber through the packing box lid of screwing, make its deformation press from both sides tight wire rope, reach the effect of frizing, it is convenient to change moreover.
4. Through being equipped with the packing fixed plate, it not only can play the effect of fixed packing box, can also block oil, the water that guide wheel department splashes out, and in the unified oil collecting box of concentrating into, the problem that guide wheel department oil, water fall to the ground in can effectively solving the pumping operation in-process.
5. The oil collecting box is connected with the swabbing tank, so that the oil and water collected in the oil collecting box are guided into the swabbing tank, and the problem of recycling the oil and water of the oil collecting box is effectively solved.
6. Through being equipped with righting wheel fixing device, we can be through manual screw cap of moving for the screw rod rotates, thereby right the wheel and play fixed spacing effect to the wire rope in the fixed slot, can adjust screw rod again simultaneously, keep away from wire rope and right the wheel.
Drawings
FIG. 1 is a schematic structural diagram of an oil leakage prevention device of a sealed blowout preventer;
FIG. 2 is a schematic diagram of the packing box;
FIG. 3 is a schematic diagram of the internal structure of the packing box;
fig. 4 is a schematic structural view of the righting wheel fixture.
Description of reference numerals:
1. an oil collecting box; 2. packing boxes; 3. an oil return line; 4. a steel wire rope righting wheel; 5. a righting wheel fixing device; 6. an iron plate; 7. an oil return line connection; 8. a central shaft; 9. a swabbing wire rope; 10. a pumping tank;
2.1, packing box body; 2.2, a packing box cover; 2.3, packing; 2.4, fixing a packing plate; 2.5 bolts;
5.1, a righting wheel fixing seat; 5.2, fixing grooves; 5.3, a nut; 5.4, connecting rods; 5.5, a screw rod; 5.6, screw cap.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the oil leakage preventing device of the closed blowout preventing box comprises an oil collecting box 1, a packing box 2, an oil return pipeline 3, a steel wire rope centering wheel 4, a centering wheel fixing device 5 and a swabbing steel wire rope 9, wherein an iron plate 6 is arranged at the top of the oil collecting box 1, the packing box 2 is fixed on the iron plate 6, the bottom of the oil collecting box 1 is connected with the oil return pipeline 3 through an oil return pipeline joint 7, the oil collecting box 1 is internally provided with two steel wire rope centering wheels 4, the two steel wire rope centering wheels 4 are symmetrically arranged side by side, a gap is reserved between the two steel wire rope centering wheels 4, the middle parts of the two steel wire rope centering wheels 4 are respectively connected with the inner wall of the oil collecting box 1 through a central shaft 8, and the centering wheel fixing device 5 is arranged below the gap between the two steel wire rope centering wheels 4; one end of the swabbing steel wire rope 9 is connected with the roller of the tractor hoist, and the other end of the swabbing steel wire rope 9 penetrates through the packing box 2 and extends downwards to a gap between the two steel wire rope righting wheels 4.
This leak protection oil device passes through the welded mode to be fixed on airtight swabbing prevents the leading wheel splint of spouting the box, through being equipped with collection oil box 1, packing box 2 and return oil line 3, can catch the oil, the water that splash out, then concentrate the recovery to can solve the problem of righting wheel department oil, water ground well, greatly reduced the crude oil pollution risk that the swab brought, reached clean production requirement.
Example 2
On the basis of the embodiment 1, the oil collecting box 1 is a rectangular iron box welded by a thin iron plate with the thickness of 3mm, the size of the rectangular iron box can be 300mm in length, 55mm in width and 140mm in height, the bottom of the rectangular iron box is connected with one end of the oil return pipeline joint 7 in a welding mode, and the connection is very fixed, so that the oil return pipeline joint is prevented from being disconnected with the bottom of the oil collecting box, and oil and water leakage is avoided.
The oil return pipeline 3 is a two-inch PVC pipe, and the oil return pipeline 3 is installed on an oil return pipeline joint 7 welded at the bottom of the oil collection box and used for guiding oil and water collected in the oil collection box into the swabbing tank 10.
Example 3
On the basis of embodiment 1, in order to further reduce the oil and water that wire rope brought out, we have increased a packing box 2 on collection oil box 1 upper portion, as shown in fig. 2, fig. 3, packing box 2 includes packing box body 2.1, the top of packing box body 2.1 is equipped with packing box lid 2.2, is equipped with packing 2.3 in the packing box body 2.1, packing 2.3 with packing box lid 2.2 is connected, the bottom of packing box body 2.1 is equipped with packing fixed plate 2.4, packing box 2 passes through packing fixed plate 2.4 and fixes on collection oil box 1. The swabbing steel wire rope 9 penetrates into the packing 2.3 from the upper part of the packing box cover 2.2 and penetrates through the packing fixing plate 2.4 to extend downwards to a gap between the two wire rope righting wheels 4.
The packing fixing plate 2.4 is fixed on the iron plate 6 through a bolt 2.5. Through the setting of packing fixed plate 2.4, it not only can play the effect of fixed packing box 2, can also block oil, the water that guide wheel department splashes out, and unified the concentrating is to gathering oil box 1, can effectively solve the problem that guide wheel department oil, water fall to the ground among the pumping operation process.
Further, the packing box body 2.1 is a hollow cylinder and is connected with the packing box cover 2.2 through screw threads. The packing in the airtight blowout prevention box is very easy to wear, and the round hole in the center of the packing is enlarged as a result, so that the oil scraping function is lost. In the packing box that we designed, when the round hole at packing center was worn and torn the grow, we can extrude packing rubber through screwing packing box lid 2.2, make its deformation press from both sides tight swabbing wire rope, reach the effect of scraping oil, it is convenient to change moreover.
Example 4
On the basis of the above embodiment, as shown in fig. 4, the righting wheel fixing device 5 at least includes a righting wheel fixing seat 5.1, two fixing grooves 5.2 are formed in the righting wheel fixing seat 5.1, the two fixing grooves 5.2 are respectively arranged in one-to-one symmetry with the two steel wire rope righting wheels 4, the bottom of each steel wire rope righting wheel 4 can be fitted in the fixing groove 5.2 corresponding to the steel wire rope righting wheel, nuts 5.3 are symmetrically arranged in the fixing groove 5.2 in the left and right direction, the nuts 5.3 are fixed in the fixing grooves 5.2 through connecting rods 5.4, the nuts 5.3 are further connected with screw rods 5.5, one end of each screw rod 5.5 is in threaded connection with the nut 5.3, the other end of each screw rod 5.5 penetrates through the fixing groove 5.2 and extends out of the fixing groove 5.2, and one end of each screw rod 5.5 extending out of the fixing groove 5.2 is provided with a nut.
The symmetric axes of the two steel wire rope righting wheels 4 and the centers of the righting wheel fixing devices 5 are both positioned on the central line of the packing box 2.
Through being equipped with righting wheel fixing device 5, we can be through manual screw nut 5.6 for screw rod 5.5 rotates, thereby holds right the wheel 4 to the wire rope in fixed slot 5.2 and plays fixed spacing effect, can adjust screw rod 5.5 again simultaneously, keeps away from wire rope and holds right wheel 4.
Example 5
The working principle of the embodiment is as follows: the bottom of the oil collecting box 1 is connected with the oil return pipeline joint 7 in a welding mode, and the connection is very fixed, so that the oil return pipeline joint 7 is prevented from being disconnected with the bottom of the oil collecting box 1, and leakage of oil and water is avoided.
Through being equipped with packing box lid 2.2, when the round hole at packing 2.3 center was worn and torn the grow, we can come the extrusion packing rubber through packing box lid 2.2 of screwing, make its deformation press from both sides tight swabbing wire rope 9, reach the effect of frizing, it is convenient to change moreover.
Through being equipped with packing fixed plate 2.4, it not only can play the effect of fixed packing box 2, can also block oil, the water that guide wheel department splashes out, and unified the concentrating is to gathering oil box 1 in, can effectively solve the problem that guide wheel department oil, water fall to the ground among the pumping operation process. Therefore, the oil and water collected in the oil collecting box 1 are led into the swabbing tank 10, and the problem of recycling the oil and water of the oil collecting box 1 is effectively solved.
Through being equipped with righting wheel fixing device 5, we can be through manual screw nut 5.6 for screw rod 5.5 rotates, thereby holds right the wheel 4 to the wire rope in fixed slot 5.2 and plays fixed spacing effect, can adjust screw rod 5.5 again simultaneously, keeps away from wire rope and holds right wheel 4.
To sum up, with the help of the utility model discloses an above-mentioned technical scheme through being equipped with collection oil box 1, packing box 2 and return oil pipe line 3, can catch the oil, the water that splash out, then concentrate the recovery to can solve the problem that righting wheel department oil, water fall to the ground well. The utility model discloses the device is not only structural design reasonable, easy operation moreover, and it is convenient to use can generally use widely.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The device and the structure which are not described in detail in the utility model are the prior art, and the device and the structure can not be described one by one.