CN110159221B - Wellhead overflow collecting device - Google Patents
Wellhead overflow collecting device Download PDFInfo
- Publication number
- CN110159221B CN110159221B CN201910542167.3A CN201910542167A CN110159221B CN 110159221 B CN110159221 B CN 110159221B CN 201910542167 A CN201910542167 A CN 201910542167A CN 110159221 B CN110159221 B CN 110159221B
- Authority
- CN
- China
- Prior art keywords
- box
- gland
- wall
- splash
- rubber core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000005452 bending Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 6
- 239000011324 bead Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/08—Wipers; Oil savers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Sewage (AREA)
Abstract
The invention relates to a wellhead overflow collecting device, wherein a liquid outlet is arranged at the bottom of the rear wall of a box body, the depth of a rear region of the box body is larger than that of a front region of the box body, a cylinder which is connected with the bottom wall of the front region of the box body and penetrates through the bottom wall of the front region of the box body is arranged in the center of the front region of the box body, a horizontal gland is welded in the cylinder, gland bolt holes are uniformly distributed on the outer circumference of the horizontal gland, bolts penetrate through the gland bolt holes to fixedly connect the horizontal gland with an upper flange of a blowout preventer, and a gland center hole through which an oil supply pipe passes is arranged in the center of the horizontal gland. The diameter of the box body along the left and right directions of the horizontal gland is divided into a front box and a rear box, the horizontal gland is divided into a front semicircular gland and a rear semicircular gland which are symmetrical, the rear wall of the front box is connected to the left side and the right side of the front semicircular cylinder, the front wall of the rear box is connected to the left side and the right side of the rear semicircular cylinder, and the rear wall of the front box and the front wall of the rear box are mutually attached together. The device has overflow collection function, alleviates environmental pollution, improves construction well head environment.
Description
Technical Field
The invention relates to an oilfield operation tool, in particular to a wellhead overflow collecting device, and belongs to the technical field of oilfield auxiliary tools.
Background
The wellhead assembly of the oil-water well comprises a four-way joint and a blowout preventer arranged above the four-way joint, and an oil pipe extends along the center of the blowout preventer. In the conventional operation process of a small overflow well of an oil-water well, overflow caused by unsealing between the periphery of an oil pipe and a blowout preventer, overflow caused by outflow of liquid in the oil pipe and the like often cause serious pollution to a well site. In the process of lifting the oil pipe, when the oil pipe is not communicated or the oil drainage device is not arranged at the lower part, when the connecting screw thread of the oil pipe is detached, liquid in the oil pipe can flow downwards rapidly, dirty oil falls down and splashes to the upper plane of the flange of the blowout preventer, so that wellhead environmental pollution is caused, construction environment is deteriorated, and physical and mental health of operators is affected.
In the prior art, a plurality of wellhead overflow collecting devices are usually of an integral structure, the size is relatively large, the integral size can reach hundreds of kilograms, the assembly and disassembly can be completed only by means of a crane when the number of people is several hours, and when the wellhead overflow collecting device is used, the collecting effect is poor due to poor wellhead tightness. The U-shaped overflow trough with the non-integral structure has the advantages that the weight of a single piece is light, but the workload and difficulty of assembling at a wellhead are increased, the U-shaped overflow trough is easy to deform and corrode in the use process, and after deformation, the U-shaped overflow trough is not tightly sealed, so that the sealing effect is poor, and dirty oil water falls to the ground. Under the condition of higher and higher environmental protection requirements, how to realize the method without affecting the operation speed and avoiding overflow pollution of well sites is always a difficult problem puzzling the oilfield construction.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a wellhead overflow collecting device which has an overflow collecting function, can buffer-collect liquid in a single oil pipe when the oil pipe is disconnected from a buckle, reduces environmental pollution, improves the construction wellhead environment and meets the requirements of safety and environmental protection.
In order to solve the technical problems, the wellhead overflow collecting device comprises a box body with an opening at the upper end, wherein a liquid outlet port is arranged at the bottom of the rear wall of the box body, the depth of a rear region of the box body is larger than that of a front region of the box body, the bottom wall of the front region is connected with the bottom wall of the rear region through an inclined plate, a cylinder which is connected with the bottom wall of the front region of the box body and penetrates through the bottom wall of the front region of the box body is arranged in the center of the front region of the box body, a horizontal gland is welded in the cylinder, gland bolt holes are uniformly distributed on the outer circumference of the horizontal gland, bolts penetrate through the gland bolt holes to fixedly connect the horizontal gland with a flange of a blowout preventer, and a gland center hole through which an oil supply pipe passes is arranged in the center of the horizontal gland; the vertical plane that the diameter of box along horizontal gland left and right directions is located is cut apart into front box and rear box, horizontal gland is cut apart into symmetrical preceding semicircle gland and back semicircle gland, the drum is cut apart into symmetrical preceding semicircle drum and back semicircle drum, the back wall connection of front box is in the left and right sides of preceding semicircle drum, the preceding wall connection of rear box is in the left and right sides of back semicircle drum, and the back wall of front box and the preceding wall of rear box paste each other and lean on together.
Compared with the prior art, the invention has the following beneficial effects: the cylinder forms a cofferdam to separate the collected dirty oil, the inner cavity of the cylinder is used as a connecting space between the horizontal gland and the flange of the blowout preventer, and the box body is small and exquisite and has light weight; the front area of the box body faces to operators, the depth is shallow, the weight is further reduced, the whole box body can be moved by one person, the weight of the box body is supported on the cylinder, and the weight of the cylinder is directly supported on the blowout preventer flange through the horizontal gland. The sloping plate not only plays a role in guiding flow, but also avoids a space for installing the gland bolts. The rear region of the box body is close to one side of the derrick, has a certain depth, has a slightly larger liquid storage amount, is connected with the liquid receiving barrel through a hose, or guides liquid into a special collecting tank and a tank, so that wellhead equipment, ground and tools cannot be polluted due to turbulent flow, the construction wellhead operation environment is improved, and the effects of safety and environmental protection are achieved. When the oil pipe is lifted up and down, the oil pipe is lifted up or inserted down along the axis of the blowout preventer, and at the moment, the integral box body cannot be installed at the wellhead due to the blocking of the oil pipe. The front half-round gland and the rear half-round gland are spliced from the front side and the rear side of the oil pipe to form the complete horizontal gland, and meanwhile, the front half-round cylinder and the rear half-round cylinder are spliced to form the complete cylinder to provide space for connecting the horizontal gland with the flange of the blowout preventer, and the two-half splicing mode is adopted to conveniently install the blowout preventer at a wellhead. And the front box and the rear box are respectively complete boxes, and even if the front box and the rear box are deformed after long-term use, liquid leakage can not be caused.
As an improvement of the invention, a rubber core is inserted into an upper port of the blowout preventer, the lower end of the rubber core is inserted into an inner cavity of the blowout preventer, the upper end of the rubber core is provided with an everting rubber core T-shaped head, the rubber core T-shaped head is seated on a blowout preventer flange, the lower end surfaces of the front semicircular gland and the rear semicircular gland are provided with concave gland caulking grooves, the upper end surface of the rubber core T-shaped head is embedded in the gland caulking grooves, the lower end surface of the rubber core T-shaped head is provided with a rubber core convex ring protruding downwards, and the rubber core convex ring is embedded in a sealing groove of the blowout preventer flange; the central hole of the rubber core is coaxial with the central hole of the gland, the lower part of the central hole of the rubber core is in interference fit with the periphery of the oil pipe, and the upper end of the central hole of the rubber core is provided with a horn mouth. The horn mouth of rubber core upper end is convenient for oil pipe from gluing core centre bore and inserts, glues the lower part of core centre bore and oil pipe periphery interference fit and has realized the sealed of oil pipe periphery, glues the inner chamber of lower extreme insertion preventer of core, stops the annular space blowout between liquid stream follow oil pipe and the preventer in the pit, seals the overflow in the pit in the well head below, greatly reduced the overflow volume of well head. The rubber core T-shaped head is sealed on the blowout preventer flange and is tightly pressed by the gland, so that the sealing between the rubber core T-shaped head and the gland as well as the blowout preventer flange is realized; the lower end face of the T-shaped head of the rubber core is provided with a convex ring of the rubber core and is embedded in the sealing groove of the flange of the blowout preventer, so that the sealing effect is further improved, the rubber core and the gland caulking groove are positioned together accurately, and the coaxial line of the rubber core and the blowout preventer is ensured.
As a further improvement of the invention, the lower end face of the blowout preventer flange is provided with a connecting ring formed by splicing two connecting semi-rings in opposite directions, a plurality of thickened connecting ring bosses are uniformly distributed on the connecting ring, the center of each connecting ring boss is respectively provided with a connecting ring screw hole, the upper end of each connecting ring screw is respectively provided with a horn mouth, and each screw penetrates through the corresponding gland bolt hole and the blowout preventer flange bolt hole from top to bottom in sequence and is screwed in the corresponding connecting ring screw hole. The two connecting semi-rings are conveniently clamped at the neck below the blowout preventer flange in a relative manner, and the connecting ring screw holes in the centers of the connecting ring bosses respectively play a role of nuts; during installation, firstly, a rubber core is inserted into an inner cavity of a blowout preventer, a rubber core convex ring is embedded into a sealing groove of a flange of the blowout preventer, then a rear connecting semi-ring is placed below the flange of the blowout preventer, a rear box is placed on the rubber core, the rear half part of a gland caulking groove is aligned with a T-shaped head of the rubber core to be pressed down, and bolts penetrate through bolt holes of a rear semicircular gland and bolt holes of the flange of the blowout preventer from top to bottom and are screwed into connecting ring screw holes of the rear connecting semi-ring; after the rear box is installed, the front box is placed on the rubber core, the front half part of the gland caulking groove is aligned with the T-shaped head of the rubber core to be pressed down, and each bolt penetrates through the bolt hole of the front semicircular gland and the bolt hole of the blowout preventer flange from top to bottom to be screwed in the connecting ring screw hole of the front connecting semi-ring; thus, the whole box body is fixed on the blowout preventer flange. The whole installation process can be completed by only two persons, and large-scale machines such as a crane are not needed, so that the operation cost is greatly reduced.
As a further improvement of the invention, the horizontal gland is in a stepped section with a high center and a low outer periphery, the gland bolt holes are distributed on the circumference with a thinner outer periphery of the horizontal gland, the tops of the bolts are covered with two symmetrical semi-ring covers, the two semi-ring covers are spliced into a complete ring cover, and the tops of the ring covers are level with the center part of the horizontal gland. The center area of the horizontal gland provided with the gland caulking groove is thicker, the periphery is thinner, after the bolts are installed, the bolts are covered by the semi-ring sealing cover, so that the bolts are built-in, the top of the device is kept flat, and the possibility of collision is reduced.
As a further improvement of the invention, the upper part of the front wall of the front box is welded with a U-shaped overflow groove extending backwards, and the rear end of the U-shaped overflow groove penetrates through a notch of the front wall of the rear box and stretches into the inner cavity of the rear box. The front box is shallow, mainly plays a role in collection, has very small liquid storage quantity, and flows into the rear box through the U-shaped overflow groove when the liquid level in the front box is higher than the bottom of the U-shaped overflow groove and flows out from a liquid outlet port of the rear box. Because the rear end of the U-shaped overflow groove passes through the splicing seam between the front box and the rear box and directly stretches into the inner cavity of the rear box, even if deformation occurs after long-time use, the liquid flow of the front box can not leak from the splicing seam between the front box and the rear box, and the wellhead environment is further ensured.
As a further improvement of the invention, the top of the rear wall of the front box is provided with a bending plate which bends backwards and downwards, the bending plate is hooked at the upper end of the front wall of the rear box, the left edge of the bending plate is abutted against the inner side of the left wall of the rear box, and the right edge of the bending plate is abutted against the inner side of the right wall of the rear box. The bending plate has the function similar to a hook, and after the rear box is installed, the front box can be directly hung on the rear box through the bending plate, so that the load of an installer for lifting the front box is reduced; the left and right edges of the bending plate are propped against the left and right walls of the rear box, so that the front box is directly positioned in the left and right directions, namely, the front box is automatically aligned with the rear box, and the mounting is faster and more convenient.
As a further improvement of the invention, the upper periphery of the front semi-cylinder is provided with a grid, and the front end of the grid is welded on the front wall of the front box. The grid can be used as a resting platform for wellhead operation, and liquid can directly fall into the front box from the grid.
As a further improvement of the invention, a splash-proof box is arranged in the middle of the deep area of the rear box, the upper end and the bottom of the splash-proof box are both open, and a drain port which is convenient for liquid to flow out is arranged at the lower part of a wallboard of the splash-proof box; the upper port of the splash-proof box is higher than the upper port of the rear box, the splash-proof box is of a structure with a wide upper part and a narrow lower part in the front-rear direction, the upper part of the splash-proof box extends out forwards, and a plurality of splash-proof sheets which are inclined to the vertical plane and are parallel to each other are arranged on the cross section of the inner cavity of the splash-proof box. In the process of lifting the oil pipe, if more dirty oil water exists in the oil pipe, more liquid flows rapidly flow downwards when the connecting screw thread of the oil pipe is detached, and the dirty oil water directly falls into the box body, so that splashing is easily caused. According to the invention, the splash-proof box is arranged right behind the oil pipe, at the moment of disassembling the connecting screw threads, an operator pushes the oil pipe backwards to the upper part of the splash-proof box, dirty oil water falls into the splash-proof box after being guided by each splash-proof piece, so that splash can be avoided, the dirty oil water falling into the splash-proof box flows out from a drain hole at the bottom of the splash-proof box and enters the rear box, and the splash-proof box is higher than the rear box, so that the instantaneous larger liquid flow is contained, and the overflow from the upper end of the splash-proof box is avoided; the environmental pollution can be greatly reduced, the construction wellhead environment is improved, and the method has higher environmental benefit.
As a further improvement of the invention, the inner cavity of the splash-proof box is provided with an upper splash-proof sheet and a lower splash-proof sheet which are arranged in a staggered way. The two staggered splash-proof sheets can further improve the splash-proof effect.
As a further improvement of the invention, the rear wall of the splash-proof box is attached to the rear wall of the rear box, the left and right walls of the splash-proof box are clamped between the rear box bead plates, and the rear box bead plates are welded on the upper edge of the rear wall of the rear box and extend forwards. The rear box area is relatively great, and the degree of depth in rear box rear region is also comparatively dark, is equipped with the back box along the mouth board and can improve the intensity of rear box on the one hand, on the other hand makes the splashproof case obtain the location in the left and right directions, ensures that it is located the gland centre bore directly behind, avoids appearing biasing for oil pipe.
Drawings
The invention will now be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration only and are not intended to limit the invention.
Fig. 1 is a front view of a first embodiment of the wellhead overflow collection device of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a perspective view of fig. 1.
Fig. 4 is a front view of the front box of fig. 1.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a top view of fig. 4.
Fig. 7 is a perspective view of fig. 4.
Fig. 8 is a front view of the rear case of fig. 1.
Fig. 9 is a top view of fig. 8.
Fig. 10 is a right side view of fig. 8.
Fig. 11 is a front view of the connector half ring.
Fig. 12 is a bottom view of the connector half ring.
Fig. 13 is a perspective view of the splash box.
Fig. 14 is a front view of the splash box.
Fig. 15 is a front view of a second embodiment of the wellhead overflow collection device of the present invention.
Fig. 16 is a top view of fig. 15.
Fig. 17 is a perspective view of fig. 15.
Fig. 18 is an exploded view of fig. 17.
In the figure: 1. a front case; a U-shaped overflow trough; 1b, bending the plate; 1c, a grid; 2. a rear case; 2a, sloping plates; 2b, a liquid outlet interface; 2c, a rear box edge plate; 2d, notch; 3. a cylinder; 3a, a front half cylinder; 3b, a rear half cylinder; 4. a horizontal gland; 4a, a front semicircular gland; 4b, a rear semicircular gland; 4c, pressing the central hole of the cover; 4d, gland bolt holes; 4e, capping caulking grooves; 5. a rubber core; 5a, a T-shaped head of the rubber core; 5b, a rubber core convex ring; 5c, a central hole of the rubber core; 6. blowout preventer; 6a, blowout preventer flanges; 7. a connecting semi-ring; 7a, connecting ring bosses; 7b, connecting ring screw holes; 8. a splash-proof box; 8a, splash-proof sheets; 8b, a drainage port; 9. and (5) a semi-ring sealing cover.
Detailed Description
As shown in fig. 1 to 3, the wellhead overflow collecting device comprises a box body with an opening at the upper end, a liquid outlet port 2b is arranged at the bottom of the rear wall of the box body, the depth of a rear region of the box body is larger than that of a front region of the box body, the bottom wall of the front region is connected with the bottom wall of the rear region through a sloping plate 2a, a cylinder 3 which is connected with the bottom wall of the front region of the box body and penetrates through the bottom wall of the front region of the box body is arranged in the center of the front region of the box body, a horizontal gland 4 is welded in the cylinder 3, gland bolt holes 4d are uniformly distributed on the outer circumference of the horizontal gland 4, bolts penetrate through the gland bolt holes 4d to fixedly connect the horizontal gland 4 with a flange of a blowout preventer 6, and a gland center hole 4c through which an oil supply pipe passes is arranged in the center of the horizontal gland 4.
The cylinder 3 forms a cofferdam to separate the collected dirty water, the inner cavity of the cylinder 3 is used as a connecting space between the horizontal gland 4 and the blowout preventer flange 6a, and the box body is small and exquisite and has light weight; the front area of the box body faces the operator, the depth is shallow, the weight is further reduced, the whole box body can be moved by one person, the weight of the box body is supported on the cylinder 3, and the weight of the cylinder 3 is directly supported on the blowout preventer flange 6a through the horizontal gland 4. The sloping plate 2a not only plays a role in diversion, but also keeps room for installation of the gland bolts. The rear region of the box body is close to one side of the derrick, has a certain depth, has a slightly larger liquid storage amount, and the liquid outlet port 2b is connected with the liquid receiving barrel through a hose or guides liquid into a special collecting tank and a tank, so that wellhead equipment, ground and tools cannot be polluted due to turbulent flow, the construction wellhead operation environment is improved, and the effects of safety and environmental protection are achieved.
As shown in fig. 4 to 10, the vertical plane in which the diameter of the case body in the left-right direction of the horizontal gland 4 is located is divided into a front case 1 and a rear case 2, the horizontal gland 4 is divided into a front semicircular gland 4a and a rear semicircular gland 4b which are symmetrical, the cylinder 3 is divided into a front semicircular cylinder 3a and a rear semicircular cylinder 3b which are symmetrical, the rear wall of the front case 1 is connected to the left and right sides of the front semicircular cylinder 3a, the front wall of the rear case 2 is connected to the left and right sides of the rear semicircular cylinder 3b, and the rear wall of the front case 1 and the front wall of the rear case 2 are abutted against each other.
When the oil pipe is lifted up and down, the oil pipe is lifted up or inserted down along the axis of the blowout preventer 6, and at this time, the integral tank cannot be installed at the wellhead due to the blocking of the oil pipe. The front half cylinder and the rear half cylinder are spliced together, the front half cylinder 4a and the rear half cylinder 4b are spliced together from the front side and the rear side of the oil pipe to form the complete horizontal gland 4, and meanwhile, the front half cylinder 3a and the rear half cylinder 3b are spliced together to form the complete cylinder, so that a space is provided for connecting the horizontal gland 4 with the blowout preventer flange 6a, and the wellhead can be conveniently installed in a two-half splicing mode. The front case 1 and the rear case 2 are respectively complete cases, and even if the case is deformed after long-term use, no liquid leakage is caused.
As shown in fig. 15, a rubber core 5 is inserted into an upper port of the blowout preventer 6, the lower end of the rubber core 5 is inserted into an inner cavity of the blowout preventer 6, an everting rubber core T-shaped head 5a is arranged at the upper end of the rubber core 5, the rubber core T-shaped head 5a is seated on a blowout preventer flange 6a, concave gland caulking grooves 4e are formed in the lower end faces of a front semicircular gland 4a and a rear semicircular gland 4b, the upper end face of the rubber core T-shaped head 5a is embedded in the gland caulking grooves 4e, a rubber core convex ring 5b protruding downwards is arranged on the lower end face of the rubber core T-shaped head 5a, and the rubber core convex ring 5b is embedded in a sealing groove of the blowout preventer flange 6 a; the central hole of the rubber core 5 is coaxial with the gland central hole 4c, the lower part of the rubber core central hole 5c is in interference fit with the periphery of the oil pipe, and the upper end of the rubber core central hole 5c is provided with a bell mouth.
The horn mouth of the upper end of the rubber core 5 is convenient for the oil pipe to be inserted from the rubber core center hole 5c, the lower part of the rubber core center hole 5c is in interference fit with the periphery of the oil pipe to realize the sealing of the periphery of the oil pipe, the lower end of the rubber core 5 is inserted into the inner cavity of the blowout preventer 6, the blowout of underground liquid flow from the annular space between the oil pipe and the blowout preventer 6 is stopped, the underground overflow is sealed below a wellhead, and the overflow amount of the wellhead is greatly reduced. The rubber core T-shaped head 5a is seated on the blowout preventer flange 6a and is tightly pressed by a gland, so that the sealing between the rubber core T-shaped head 5a and the gland as well as the blowout preventer flange 6a is realized; the lower end face of the rubber core T-shaped head 5a is provided with a rubber core convex ring 5b and is embedded in a sealing groove of the blowout preventer flange 6a, so that the sealing effect is further improved, the rubber core 5 is accurately positioned together with the gland caulking groove 4e, and the coaxial line of the rubber core 5 and the blowout preventer 6 is ensured.
The lower end face of the blowout preventer flange 6a is provided with a connecting ring formed by splicing two connecting semi-rings 7 in opposite directions. As shown in fig. 11 and 12, a plurality of thickened connecting ring bosses 7a are uniformly distributed on the connecting ring, connecting ring screw holes 7b are respectively arranged in the center of each connecting ring boss 7a, bell mouths are respectively arranged at the upper ends of the connecting ring screws, and each bolt sequentially passes through a corresponding gland bolt hole 4d and a corresponding blowout preventer flange bolt hole from top to bottom to be screwed in the corresponding connecting ring screw hole 7b.
Two connecting semi-rings 7 are adopted to be conveniently clamped at the neck part below the blowout preventer flange 6a in opposite directions, and connecting ring screw holes 7b in the centers of the connecting ring bosses 7a respectively play a role of nuts; during installation, firstly, the rubber core 5 is inserted into the inner cavity of the blowout preventer 6, the rubber core convex ring 5b is embedded into the sealing groove of the blowout preventer flange 6a, then the rear connecting semi-ring 7 is placed below the blowout preventer flange 6a, the rear box 2 is placed on the rubber core 5, the rear half part of the gland caulking groove 4e is aligned with the rubber core T-shaped head 5a to be pressed down, and all bolts pass through the bolt holes of the rear semicircular gland 4b and the blowout preventer flange bolt holes from top to bottom to be screwed into the connecting ring screw holes 7b of the rear connecting semi-ring 7; after the rear box 2 is installed, the front box 1 is placed on the rubber core 5, so that the front half part of the gland caulking groove 4e is aligned with the rubber core T-shaped head 5a to be pressed down, and each bolt penetrates through the bolt hole of the front semicircular gland 4a and the bolt hole of the blowout preventer flange from top to bottom to be screwed in the connecting ring screw hole 7b of the front connecting semi-ring 7; this achieves the fixing of the entire tank to the blowout preventer flange 6a. The whole installation process can be completed by only two persons, and large-scale machines such as a crane are not needed, so that the operation cost is greatly reduced.
The upper part of the front wall of the front box is welded with a U-shaped overflow groove 1a extending backwards, and the rear end of the U-shaped overflow groove 1a penetrates through a notch 2d of the front wall of the rear box and stretches into the inner cavity of the rear box 2. The front box 1 is shallow, mainly plays a role in collection, has very small liquid storage quantity, and flows into the rear box 2 through the U-shaped overflow groove 1a when the liquid level in the front box 1 is higher than the bottom of the U-shaped overflow groove 1a, and flows out from the liquid outlet port 2b of the rear box 2. Because the rear end of the U-shaped overflow launder 1a passes over the splicing seam between the front box 1 and the rear box 2 and directly stretches into the inner cavity of the rear box 2, even if deformation occurs after long-time use, the liquid flow of the front box 1 can not leak from the splicing seam between the front box 1 and the rear box 2, and the wellhead environment is further ensured.
The top of the front box rear wall is provided with a bending plate 1b which bends backwards and downwards, the bending plate 1b is hooked at the upper end of the rear box front wall, the left edge of the bending plate 1b abuts against the inner side of the left wall of the rear box 2, and the right edge of the bending plate 1b abuts against the inner side of the right wall of the rear box 2. The bending plate 1b has a function similar to a hook, and after the rear box 2 is installed, the front box 1 can be directly hung on the rear box 2 through the bending plate 1b, so that the load of an installer for lifting the front box 1 is reduced; the left and right edges of the bending plate 1b are propped against the left and right walls of the rear box 2, so that the front box 1 is directly positioned in the left and right directions, namely, is automatically aligned with the rear box 2, and the installation is faster and more convenient.
The upper outer periphery of the front half cylinder 3a is provided with a mesh 1c, and the front end of the mesh 1c is welded to the front wall of the front box 1. The grid 1c can be used as a resting platform for wellhead operations, and liquid can fall directly from the grid 1c into the front box 1.
As shown in fig. 1 to 4, a splash-proof box 8 is arranged in the middle of the deep area of the rear box 2, the upper end and the bottom of the splash-proof box 8 are both open, and a drain port 8b which is convenient for liquid to flow out is arranged at the lower part of a wall plate of the splash-proof box 8; the upper port of the splash-proof box 8 is higher than the upper port of the rear box 2, the splash-proof box 8 is of a structure with a wide upper part and a narrow lower part in the front-rear direction, the upper part of the splash-proof box extends out forwards, and a plurality of splash-proof pieces 8a which are inclined to the vertical plane and are parallel to each other are arranged on the cross section of the inner cavity of the splash-proof box 8.
In the process of lifting the oil pipe, if more dirty oil water exists in the oil pipe, more liquid flows rapidly flow downwards when the connecting screw thread of the oil pipe is detached, and the dirty oil water directly falls into the box body, so that splashing is easily caused. According to the invention, the splash-proof box 8 is arranged right behind the oil pipe, at the moment of disassembling the connecting screw threads, an operator pushes the oil pipe backwards to the upper part of the splash-proof box 8, dirty oil water falls into the splash-proof box 8 after being guided by each splash-proof piece 8a, so that splash can be avoided, the dirty oil water falling into the splash-proof box 8 flows out from a drain port 8b at the bottom of the splash-proof box 8 and enters the rear box 2, the splash-proof box 8 is higher than the rear box 2, so that the instantaneous larger liquid flow is contained, and the overflow from the upper end of the splash-proof box 8 is avoided; the environmental pollution can be greatly reduced, the construction wellhead environment is improved, and the method has higher environmental benefit.
As shown in fig. 13 and 14, the splash guard 8a has two upper and lower splash guards 8a arranged in a staggered manner in the inner cavity of the splash guard 8. The two staggered splash guard 8a can further improve the splash guard effect.
The rear wall of the splash guard 8 is attached to the rear wall of the rear case 2, and the left and right walls of the splash guard 8 are clamped between the rear case bead plates 2c, and the rear case bead plates 2c are welded to the upper edge of the rear case rear wall and extend forward. The area of the rear box 2 is relatively large, the depth of the rear area of the rear box is also relatively deep, and the rear box edge opening plate 2c is arranged to improve the strength of the rear box 2 on one hand, and on the other hand, the splash proof box 8 is positioned in the left-right direction, so that the splash proof box is positioned right behind the gland center hole 4c, and offset relative to an oil pipe is avoided.
As shown in fig. 15 to 18, the horizontal gland 4 has a stepped section with a high center and a low outer periphery, the gland bolt holes 4d are distributed on the circumference of the horizontal gland 4 with a thinner outer periphery, the tops of the bolts are covered with two symmetrical semi-ring covers 9, the two semi-ring covers 9 are spliced into a complete ring cover, and the tops of the ring covers are level with the center of the horizontal gland 4. The center area of the horizontal gland 4 provided with the gland caulking groove 4e is thicker, the periphery is thinner, after the bolts are installed, the bolts are covered by the semi-ring sealing cover 9, so that the bolts are built in, the top of the device is kept flat, and the possibility of collision is reduced.
Claims (6)
1. The utility model provides a well head overflow collection device, includes upper end open-ended box, the back wall bottom of box is equipped with out liquid interface, its characterized in that: the depth of the rear region of the box body is larger than that of the front region of the box body, the bottom wall of the front region is connected with the bottom wall of the rear region through an inclined plate, the center of the front region of the box body is provided with a cylinder which is connected with the bottom wall of the front region of the box body and penetrates through the bottom wall of the front region of the box body, a horizontal gland is welded in the cylinder, gland bolt holes are uniformly distributed on the outer circumference of the horizontal gland, bolts penetrate through the gland bolt holes to fixedly connect the horizontal gland with a flange of the blowout preventer, and the center of the horizontal gland is provided with a gland center hole through which an oil supply pipe passes; the vertical plane of the box body along the left-right direction of the horizontal gland is divided into a front box and a rear box, the horizontal gland is divided into a front semicircular gland and a rear semicircular gland which are symmetrical, the cylinder is divided into a front semicircular cylinder and a rear semicircular cylinder which are symmetrical, the rear wall of the front box is connected to the left side and the right side of the front semicircular cylinder, the front wall of the rear box is connected to the left side and the right side of the rear semicircular cylinder, and the rear wall of the front box and the front wall of the rear box are mutually attached together;
the upper end of the blowout preventer is inserted with a rubber core, the lower end of the rubber core is inserted into an inner cavity of the blowout preventer, the upper end of the rubber core is provided with an everting rubber core T-shaped head, the rubber core T-shaped head is seated on a blowout preventer flange, the lower end faces of the front semicircular gland and the rear semicircular gland are provided with concave gland caulking grooves, the upper end face of the rubber core T-shaped head is embedded in the gland caulking grooves, the lower end face of the rubber core T-shaped head is provided with a rubber core convex ring protruding downwards, and the rubber core convex ring is embedded in a sealing groove of the blowout preventer flange; the central hole of the rubber core is coaxial with the central hole of the gland, the lower part of the central hole of the rubber core is in interference fit with the periphery of the oil pipe, and the upper end of the central hole of the rubber core is provided with a horn mouth;
the lower end face of the blowout preventer flange is provided with a connecting ring formed by splicing two connecting semi-rings in opposite directions, a plurality of thickened connecting ring bosses are uniformly distributed on the connecting ring, the center of each connecting ring boss is respectively provided with a connecting ring screw hole, the upper end of each connecting ring screw hole is respectively provided with a horn mouth, and each bolt sequentially passes through a corresponding gland bolt hole and a corresponding blowout preventer flange bolt hole from top to bottom to be screwed in the corresponding connecting ring screw hole;
the upper part of the front wall of the front box is welded with a U-shaped overflow groove extending backwards, and the rear end of the U-shaped overflow groove penetrates through a notch of the front wall of the rear box and stretches into the inner cavity of the rear box;
the middle part of the deep area of the rear box is provided with a splash-proof box, the upper end and the bottom of the splash-proof box are both open, and the lower part of a wallboard of the splash-proof box is provided with a drainage port which is convenient for liquid to flow out; the upper port of the splash-proof box is higher than the upper port of the rear box, the splash-proof box is of a structure with a wide upper part and a narrow lower part in the front-rear direction, the upper part of the splash-proof box extends out forwards, and a plurality of splash-proof sheets which are inclined to the vertical plane and are parallel to each other are arranged on the cross section of the inner cavity of the splash-proof box.
2. The wellhead overflow collection device of claim 1, wherein: the horizontal gland is of a stepped section with high center and low periphery, gland bolt holes are distributed on the circumference of the periphery of the horizontal gland, two symmetrical semi-ring covers are covered on the tops of the bolts, the two semi-ring covers are spliced into a complete ring cover, and the tops of the ring covers are level with the center of the horizontal gland.
3. The wellhead overflow collection device of claim 1, wherein: the top of the front box rear wall is provided with a bending plate which bends backwards and downwards, the bending plate is hooked at the upper end of the rear box front wall, the left edge of the bending plate abuts against the inner side of the left wall of the rear box, and the right edge of the bending plate abuts against the inner side of the right wall of the rear box.
4. The wellhead overflow collection device of claim 1, wherein: the periphery of the upper part of the front half cylinder is provided with a grid, and the front end of the grid is welded on the front wall of the front box.
5. The wellhead overflow collection device of claim 1, wherein: the inner cavity of the splash-proof box is provided with an upper splash-proof sheet and a lower splash-proof sheet which are arranged in a staggered way.
6. The wellhead overflow collection device of claim 1, wherein: the back wall of splashproof case is laminated mutually with the back wall of back case, the left and right walls of splashproof case are held between the back case edge mouth board, and the welding of back case edge mouth board is followed and is extended forward at the upper edge of back case back wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910542167.3A CN110159221B (en) | 2019-06-21 | 2019-06-21 | Wellhead overflow collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910542167.3A CN110159221B (en) | 2019-06-21 | 2019-06-21 | Wellhead overflow collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159221A CN110159221A (en) | 2019-08-23 |
| CN110159221B true CN110159221B (en) | 2024-02-06 |
Family
ID=67626481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910542167.3A Active CN110159221B (en) | 2019-06-21 | 2019-06-21 | Wellhead overflow collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159221B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377748A (en) * | 1993-09-23 | 1995-01-03 | Pool Company | Spill container for wells with improved mounting |
| CN201377300Y (en) * | 2009-02-27 | 2010-01-06 | 崔卫仓 | Easily assembled self-sealing blowout preventor |
| RU94277U1 (en) * | 2010-01-22 | 2010-05-20 | Открытое акционерное общество "Станкотехника" | TUBE PREVENTOR DIES KIT |
| CN201883990U (en) * | 2010-12-14 | 2011-06-29 | 雷宽成 | Compensation type annular blowout preventing device |
| CN202866757U (en) * | 2012-09-24 | 2013-04-10 | 郭盼盼 | Oil tube oil wiper installed on well mouth |
| CN204691726U (en) * | 2015-06-05 | 2015-10-07 | 荣远宏 | Well head simple and easy control spray oil wiper |
| CN205063887U (en) * | 2015-10-19 | 2016-03-02 | 青岛海旭石油泵业有限公司 | Slurry blowout -prevention box |
| CN205677575U (en) * | 2016-06-17 | 2016-11-09 | 中国石油化工股份有限公司 | A kind of workover treatment well head multi-function protector |
| WO2017100675A1 (en) * | 2015-12-10 | 2017-06-15 | General Electric Company | Variable ram for a blowout preventer and an associated method thereof |
| CN207177808U (en) * | 2017-09-21 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of oil well operation well head swab case |
| CN108331557A (en) * | 2018-02-12 | 2018-07-27 | 新疆石油管理局有限公司准东勘探开发分公司 | Environment-friendly type operation wellhead liquid collecting operating platform and its application method |
| CN108360996A (en) * | 2018-03-01 | 2018-08-03 | 中国矿业大学(北京) | Well mouth rotary commutation blowout prevention integrated apparatus |
| CN210164454U (en) * | 2019-06-21 | 2020-03-20 | 中国石油化工集团有限公司 | Wellhead device of low-pressure operation overflow well |
-
2019
- 2019-06-21 CN CN201910542167.3A patent/CN110159221B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377748A (en) * | 1993-09-23 | 1995-01-03 | Pool Company | Spill container for wells with improved mounting |
| CN201377300Y (en) * | 2009-02-27 | 2010-01-06 | 崔卫仓 | Easily assembled self-sealing blowout preventor |
| RU94277U1 (en) * | 2010-01-22 | 2010-05-20 | Открытое акционерное общество "Станкотехника" | TUBE PREVENTOR DIES KIT |
| CN201883990U (en) * | 2010-12-14 | 2011-06-29 | 雷宽成 | Compensation type annular blowout preventing device |
| CN202866757U (en) * | 2012-09-24 | 2013-04-10 | 郭盼盼 | Oil tube oil wiper installed on well mouth |
| CN204691726U (en) * | 2015-06-05 | 2015-10-07 | 荣远宏 | Well head simple and easy control spray oil wiper |
| CN205063887U (en) * | 2015-10-19 | 2016-03-02 | 青岛海旭石油泵业有限公司 | Slurry blowout -prevention box |
| WO2017100675A1 (en) * | 2015-12-10 | 2017-06-15 | General Electric Company | Variable ram for a blowout preventer and an associated method thereof |
| CN205677575U (en) * | 2016-06-17 | 2016-11-09 | 中国石油化工股份有限公司 | A kind of workover treatment well head multi-function protector |
| CN207177808U (en) * | 2017-09-21 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of oil well operation well head swab case |
| CN108331557A (en) * | 2018-02-12 | 2018-07-27 | 新疆石油管理局有限公司准东勘探开发分公司 | Environment-friendly type operation wellhead liquid collecting operating platform and its application method |
| CN108360996A (en) * | 2018-03-01 | 2018-08-03 | 中国矿业大学(北京) | Well mouth rotary commutation blowout prevention integrated apparatus |
| CN210164454U (en) * | 2019-06-21 | 2020-03-20 | 中国石油化工集团有限公司 | Wellhead device of low-pressure operation overflow well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110159221A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110159221B (en) | Wellhead overflow collecting device | |
| CN110307235B (en) | Hexagon socket head cap screw fastener | |
| CN210164454U (en) | Wellhead device of low-pressure operation overflow well | |
| CN215632893U (en) | Well mouth watering combination valve of oil production well | |
| CN210154626U (en) | Gate system and water measuring tank thereof | |
| CN111287685B (en) | Wellhead operation protection device and protection method | |
| KR20090062095A (en) | Apparatus for preventing polution of subterranean water | |
| CN210923264U (en) | Fire control pipe resistance to compression test adjustment mechanism | |
| CN201287928Y (en) | Inspection cover | |
| CN201747120U (en) | Connecting piece used for assembling guardrail beam and guardrail pillar | |
| CN214712097U (en) | Glass cover plate with good oil-proof effect | |
| CN216389754U (en) | Building pipeline grounding device | |
| CN213393749U (en) | Combined high-density titanium flanged gate valve | |
| CN210268827U (en) | Radar level meter easy to assemble | |
| CN220953682U (en) | Prefabricated part for cleaning opening | |
| CN212028585U (en) | Gate valve component with bidirectional flow guiding function | |
| JP2001338814A (en) | Oil-outflow preventive cover for transformer | |
| CN2690576Y (en) | Anti-pollution wellhead device for water source well | |
| CN216867071U (en) | Shaft seal water collecting device | |
| CN215950742U (en) | Adapting PE drain pipe | |
| KR20180095959A (en) | Gate valve for attached wall | |
| CN215211006U (en) | Building bored concrete pile is with protecting a section of thick bamboo | |
| CN215258003U (en) | Novel wave-proof valve with external pin shaft | |
| CN213477017U (en) | Wiring structure of electric excavator | |
| CN215071441U (en) | Sealing device for cable installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |