CN102797422A - Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column - Google Patents

Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column Download PDF

Info

Publication number
CN102797422A
CN102797422A CN201210250254XA CN201210250254A CN102797422A CN 102797422 A CN102797422 A CN 102797422A CN 201210250254X A CN201210250254X A CN 201210250254XA CN 201210250254 A CN201210250254 A CN 201210250254A CN 102797422 A CN102797422 A CN 102797422A
Authority
CN
China
Prior art keywords
pipe
valve
urceolus
joint
sand sediment
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.)
Granted
Application number
CN201210250254XA
Other languages
Chinese (zh)
Other versions
CN102797422B (en
Inventor
段宝玉
崔金榜
郝丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201210250254.XA priority Critical patent/CN102797422B/en
Publication of CN102797422A publication Critical patent/CN102797422A/en
Application granted granted Critical
Publication of CN102797422B publication Critical patent/CN102797422B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column, which is applied to a coal bed gas well for water pumping gas production, and is characterized in that a coal bed gas well casing is internally provided with a combined pulverized coal sand-settling pipe; an upper adapter connector at the upper end of the combined pulverized coal sand-settling pipe is connected with a screen pipe; the upper end of the screen pipe is connected with a coal bed gas well special plunger pump; the upper end of the tubular column adapter connector of the coal bed gas well special plunger pump is connected with an oil pipe; the upper end of the oil pipe achieves the wellhead; the oil pipe is internally provided with a pumping rod; and the lower end of the pumping rod is connected with the roofbolt adapter connector of the coal bed gas well special plunger pump. The tubular column has the following effects: the influence of the pulverized coal produced in the coal bed gas well production process on the whole water pumping gas production system can be eliminated or reduced; and when the pump is inspected, the combined pulverized coal sand-settling pipe at the bottom is lifted to the ground together with the tubular column, so that the pulverized coal can be cleared and the subsequent pulverized coal salvaging operation can be saved.

Description

Coal bed gas well drags for coal dust, water pumping gas production integrated pipe column
Technical field
The present invention relates to the coal-bed gas exploitation technical field, particularly the water pumping gas production tubing string under the air to open of coal seam is that a kind of coal bed gas well drags for coal dust, water pumping gas production integrated pipe column.
Background technology
In recent years, a kind of emerging clean type energy---coal bed gas receives people's attention gradually, and the exploration and development of coal bed gas is also growing, and the exploitation country from the coal bed gas drilling well to coal bed gas has all dropped into great amount of manpower and material resources, financial resources.
At present, the most coal bed gas well drainage and step-down system of field by using quotes the oil pumping system in the oil well, comprises sucker rod, oil well pump, oil pipe and other instrument and equipment.In coal bed gas well, adopt field mining equipment and technology, most of technology can directly be used for reference and quote, and need not transform, but in view of the coal-bed gas exploitation characteristics, not all technology can both be indiscriminately imitated.Logical field practice is in a few years found to cause present drainage and step-down system frequently to break down owing to the output of coal dust in the coal bed gas well manufacturing process, and the appearance of a large amount of coal dusts makes the coal dust deposition of artificial bottom of a well more and more.With drainage and step-down tubing string G.I.H, each construction operation all need carry out the coal dust fishing for smoothly.The field by using fishing socket is fished for coal dust, can only fish for a spot of coal dust at every turn, and every mouthful of well all need repeatedly play lower tubular column and could accomplish the coal dust salvage, and this has not only increased the work operations amount, has also increased activity duration and expense simultaneously greatly.In addition; Because the otherness of pumping medium and oil well medium in the coal bed gas well; The plunger displacement pump that causes in oil well, having good functional performance uses occur frequently existing standing valve, travelling valve of time-frequency to be deposited over the stuck fault of coal dust in the valve in coal bed gas well; These faults have all been explained existing oil well pump and production practice tubing string and not exclusively have been fit to the drainage and step-down gas production of coal bed gas well, needed the proprietary technology and the instrument of research coal bed gas well exploitation.
Chinese patent publication number: CN201567983U provides another kind of " continuously washing coal ash under coal bed methane well in bride type without causing pollution process pipe string ", is applied to the coal-bed gas exploitation down-hole towards coal dust.Characteristic is: be connected with gap bridge in the lower end of ball-and-seat.Connect oil pipe in last gap bridge lower end, oil pipe is connected with special joint, following gap bridge and extension type in turn towards the coal dust jet pipe.On the oil pipe of last gap bridge bottom connection, be connected with upper packer and lower packet, the position of upper packer is on the top in coal seam; The position of lower packet is in the bottom in coal seam, and upper packer and lower packet are in sleeve pipe, and last gap bridge is connected with one and goes up intubate, and special joint is inserted in last intubate lower end, and special joint connects intubate down, and the lower end of following intubate is inserted down and passed a bridge.Effect is: the packing coal seam, and change and inject water and the water stream channel that returns draining, form the inner sealing waterpower circulation of oil pipe, cooperate tubing string can form a cover butt joint, need not repeat lower tubular column, can implement the working string of coal bed gas well continuously towards coal dust.
Summary of the invention
The objective of the invention is: provide a kind of coal bed gas well to drag for coal dust, water pumping gas production integrated pipe column, realize the gas production of coal bed gas oil pumper drainage and step-down; Adopt the special-purpose plunger displacement pump of coal bed gas well to substitute the special-purpose plunger displacement pump in present oil field; The fine particle coal dust that can prevent to get in the pump is deposited on generation fault in standing valve, the travelling valve; Increase the whole oil pumper drainage and step-down gas production stability of a system and reliability, reduce construction times; In addition, make and drag for coal dust and carry out simultaneously, simplify working procedure, improve operating efficiency, reduce labor strength, reduce operating cost, improve rate when producing with inspection pump construction.
The technical scheme that the present invention adopts is: coal bed gas well drags for coal dust, water pumping gas production integrated pipe column, mainly is made up of sucker rod, oil pipe, the special-purpose plunger displacement pump of coal bed gas well, screen casing and combined coal powder sand sediment pipe.It is characterized in that: in coal bed gas gas well sleeve pipe, the combined coal powder sand sediment pipe is arranged, the combined coal powder sand sediment pipe is positioned at tubing string bottom, and in well, is positioned at the well-case perforating pars infrasegmentalis.Going up of combined coal powder sand sediment pipe upper end becomes snapping head connection screen casing, and the maximum pulverized coal particle that the screen casing maximum diameter of hole allows to pass through is 80 orders, can prevent that coal dust from passing through screen casing and getting in the pump.The following guide sub of the special-purpose plunger displacement pump of the coal bed gas well that is threaded in the upper end of screen casing, the special-purpose plunger displacement pump of coal bed gas well is in well inner sleeve perforated interval bottom; Tubing string at the special-purpose plunger displacement pump of coal bed gas well becomes snapping head upper end connection oil pipe, and the oil pipe upper end is to well head; Sucker rod is arranged in oil pipe, and the roofbolt that the lower end of sucker rod connects the special-purpose plunger displacement pump of coal bed gas well becomes the snapping head.Having the fluid sealant bowl that the annular space between internal surface of sleeve pipe and the combined coal powder sand sediment pipe outer wall is sealed on the combined coal powder sand sediment pipe, the coal dust of output can only be deposited in the combined coal powder sand sediment pipe when coal bed gas well was produced, and can not be deposited on the artificial bottom of a well.
One of key of the present invention is to be positioned at the combined coal powder sand sediment pipe of tubing string foot.The combined coal powder sand sediment pipe mainly is made up of last change snapping head, central tube, fluid sealant bowl, shear pin, fishing joint, sand sediment pipe, sand sediment pipe lower contact, sand sediment pipe top connection, guide sub, plug pin and plug.There is internal thread at the two ends up and down of last change snapping head, and the upper end internal thread can be connected the lower end of tubing string; It is characterized in that: on become the snapping head the lower end internal thread connect a central tube; The lower end outer wall of central tube has screw thread, and the lower end outer wall of central tube is processed with a cannelure, and the shape of cross section of cannelure is a rectangle, and the width of cannelure is identical with the diameter of shear pin; The fishing joint screw top is connected the central tube lower end; At even four the threaded apertures that distribute of the root of fishing joint upper external thread, shear pin screws in the threaded aperture, and in the cannelure of the front end of shear pin entering central tube lower end, shear pin is fixed together central tube and fishing joint; The circular cylinder that outside protrusion is arranged in the fishing joint; On the outer wall of the circular cylinder that outwards protrudes, external screw thread is arranged; On the circular cylinder that outwards protrudes, be evenly distributed with axial hole, pulverized coal particle can get in the combined type sand sediment pipe of bottom through axial hole.
On the outer wall of the circular cylinder that fishing joint is outwards protruded, external screw thread is arranged; A fluid sealant bowl has been threaded on the circular cylinder that fishing joint is outwards protruded; The fluid sealant bowl is the stairstepping cylinder; The external diameter of fluid sealant bowl upper end is identical with casing inner diameter, and the outer wall that is lowered to fluid sealant bowl upper end in back in the sleeve pipe can fit tightly sealing with internal surface of sleeve pipe;
The lower end of fishing joint 2~8 the combined type sand sediment pipes that have been threaded, the combined type sand sediment pipe is made up of sand sediment pipe, sand sediment pipe top connection and sand sediment pipe lower contact; Sand sediment pipe, sand sediment pipe top connection are threaded successively with the sand sediment pipe lower contact and are in the same place; Sand sediment pipe is a steel pipe, and there is internal thread at the sand sediment pipe two ends; The sand sediment pipe lower contact is a steel pipe, and there is external screw thread sand sediment pipe lower contact upper end, and there is internal thread the lower end; The sand sediment pipe top connection is a steel pipe, and there is internal thread at sand sediment pipe top connection two ends;
The guide sub that is threaded in the combined type sand sediment pipe lower end of foot, guide sub is made up of upper end large diameter steel pipe, middle part conical tube and lower end minor-diameter steel-tube; In the minor-diameter steel-tube of guide sub lower end, insert a cylinder bodily form plug, between guide sub and the cylinder bodily form plug through horizontal plug dowel fixes together.
The lower end sulfuration of fluid sealant bowl has on the cylindrical shape steel body, and internal thread is arranged at the bottom of cylindrical shape steel body, and cylindrical shape steel body is threaded in the fishing joint.
Two of key of the present invention is to have adopted the special-purpose plunger displacement pump of coal bed gas well that prevents that standing valve, travelling valve from being blocked by coal dust.The special-purpose plunger displacement pump of coal bed gas well, mainly by roofbolt become that snapping head, the valve bonnet that moves about, tubing string become that snapping head, the valve ball that moves about, the valve seat that moves about, travelling valve joint, pump barrel are set upright, pump barrel, go up urceolus, plunger, pump barrel sealing ring, urceolus joint sealing circle, urceolus joint, down urceolus, plunger guide head, standing valve cover, fixed valve ball, fixed valve base, fixed valve base sealing ring, standing valve extension pipe, down guide sub, the urceolus sealing ring is formed down.
Roofbolt becomes snapping head upper end has internal thread, can be connected the lower end of beam hanger post.There is external screw thread the lower end that roofbolt becomes the snapping head, and the valve bonnet that moves about is threaded in the lower end of roofbolt change snapping head; The valve bonnet that moves about is a cylindrical shape; On the wall of valve bonnet that moves about, be evenly equipped with axial weep hole; Move about be provided with in the valve bonnet move about valve ball with move about valve seat, the valve ball that moves about is on the top of moving about valve seat, the valve seat that moves about is fixed on the valve ball that moves about forms the travelling valve assembly in the valve bonnet that moves about; Move about the lower surface of upper surface and weep hole of valve seat at same horizontal plane, and coal dust can not be deposited in the valve bonnet that moves about.There is internal thread the move about lower end of valve bonnet, and the lower end of the valve bonnet that moves about connects the travelling valve joint, and the travelling valve joint has centre bore, the lower end thread connecting plunger of travelling valve joint, and plunger has centre bore, and the lower end of plunger connects the plunger guide head.The beam hanger post moves back and forth under the drive of oil pumper, drives roofbolt change snapping head, the valve bonnet that moves about, the valve ball that moves about, the valve seat that moves about, travelling valve joint, plunger and plunger guide head and pumps.
Tubing string becomes snapping head upper end has internal thread, can be connected the lower end of oil pipe.There is external screw thread the lower end that tubing string becomes the snapping head, urceolus on the lower end of tubing string change snapping head is threaded; There is internal thread the lower end of last urceolus, and there is urceolus joint sealing circle the be threaded upper end of urceolus joint, the lower end of last urceolus between last urceolus and the urceolus joint; There is external screw thread the lower end of urceolus joint, the lower end of the urceolus joint urceolus that is threaded down; The urceolus joint has centre bore, and plunger passes the centre bore of urceolus joint; There is internal thread the upper end of urceolus joint, and the upper end screw thread of socket joint head is connected with pump barrel outside, and the pump barrel sealing ring is arranged between urceolus joint and the pump barrel; Plunger is slidingly matched between plunger outer wall and the pump barrel inwall in pump barrel; There is external screw thread the pump barrel upper end, and the upper end screw thread of pump barrel is connected with pump barrel and sets upright, and pump barrel is set upright and is annular, and pump barrel has been set upright axially extending bore; The urceolus joint has been divided into two parts up and down with the special-purpose plunger displacement pump of whole coal bed gas well, from the travelling valve assembly enter in the oil pipe the fine particle coal dust the axially extending bore that the decline process will be set upright through pump barrel be deposited on urceolus, pump barrel and urceolus joint composition annular space in.
There is internal thread the lower end of following urceolus, and guide sub under the lower end of urceolus is threaded down has following urceolus sealing ring between following guide sub and the following urceolus; Following guide sub has centre bore, and there is internal thread the upper end of following guide sub centre bore, and the lower end of standing valve extension pipe is threaded in down the upper end of guide sub centre bore; The upper end screw thread of deciding the valve extension pipe is connected with standing valve cover, on the standing valve cover wall axial hole is arranged; The fixed valve base sealing ring is arranged between standing valve extension pipe and standing valve cover; Be fixed with fixed valve base in the standing valve cover, fixed valve ball arranged on the top of fixed valve base.Standing valve cover, fixed valve ball, fixed valve base, fixed valve base sealing ring are formed fixed valve assembly; Fixed valve assembly promotes certain altitude; Make to get into the inner tiny pulverized coal particle of pump barrel from fixed valve assembly and can not be deposited on the fixed valve base, get into coal dust in the pump barrel and be deposited on play in the annular space between urceolus and standing valve extension pipe, the following guide sub.
Move about the external diameter (42mm) of valve bonnet than the big 4mm of pump barrel internal diameter (38mm), and up and down reciprocatingly in the running, the valve bonnet that moves about can not get in the pump barrel at rod string.
Beneficial effect of the present invention: coal bed gas well of the present invention drags for coal dust, water pumping gas production integrated pipe column; The coal dust that can eliminate or reduce output in the coal bed gas well manufacturing process is to the influence of whole water pumping gas production system; The combined coal powder sand sediment pipe of bottom directly is deposited in the combined coal powder sand sediment pipe coal dust of the larger particles of output from the coal seam, and in inspection during pump, combined coal powder sand sediment pipe and the coal dust that sinks to the inside together play ground with tubing string; Can clear up the coal dust of output in the manufacturing process; Can save the follow-up coal dust operation of dragging for again, make the construction of inspection pump and drag for the coal dust construction and carry out simultaneously, once construction is merged in twice construction; Reach and practice thrift the activity duration and reduce operating cost, improve overall economic efficiency.The special-purpose plunger displacement pump of the coal bed gas well of special construction has thoroughly been broken common oil pumping pump structure; Adopt the special construction design of high standing valve and long-plunger; The fine particle coal dust that gets in the pump can not be deposited on standing valve and the travelling valve; Avoid being deposited the stuck thrashing that causes of superincumbent coal dust, prolong the time of pump operate as normal, increase methane output owing to standing valve or travelling valve.
Description of drawings
Fig. 1 is that coal bed gas well of the present invention drags for coal dust, water pumping gas production integrated pipe column structural profile sketch map.
Fig. 2 a is combined coal powder sand sediment pipe 5 the first half generalized sections; Fig. 2 b is combined coal powder sand sediment pipe 5 the latter half generalized sections.
Fig. 3 a is the special-purpose plunger displacement pump 3 the first half generalized sections of coal bed gas well; Fig. 3 b is the special-purpose plunger displacement pump 3 the latter half generalized sections of coal bed gas well.
Among the figure, the special-purpose plunger displacement pump of 1-sucker rod, 2-oil pipe, 3-coal bed gas well, 4-screen casing, 5-combined coal powder sand sediment pipe, 21-roofbolt become that snapping head, 22-move about that valve bonnet, 23-tubing string become that snapping head, 24-move about that valve ball, 25-move about that valve seat, 26-travelling valve joint, 27-pump barrel are set upright, under the 28-pump barrel, the last urceolus of 29-, 30-plunger, 31-pump barrel sealing ring, 32-urceolus joint sealing circle, 33-urceolus joint, 34-under urceolus, 35-plunger guide head, 36-standing valve cover, 37-fixed valve ball, 38-fixed valve base, 39-fixed valve base sealing ring, 40-standing valve extension pipe, the 41-under guide sub, the 42-urceolus sealing ring, the last change of 51-snapping head, 52-central tube, 53-fluid sealant bowl, 54-shear pin, 55-fishing joint, 56-sand sediment pipe, the lower contact of 57-sand sediment pipe, the top connection of 58-sand sediment pipe, 59-guide sub, 60-plug pin, the 61-plug.
The specific embodiment
Embodiment 1: with one be that the coal bed gas well that uses in the 124mm oil well drags for coal dust, the water pumping gas production integrated pipe column is example at casing inner diameter, the present invention is done further explain.
Consult Fig. 1.Coal bed gas well of the present invention drags for coal dust, water pumping gas production integrated pipe column, mainly is made up of sucker rod 1, oil pipe 2, the special-purpose plunger displacement pump 3 of coal bed gas well, screen casing 4 and combined coal powder sand sediment pipe 5.In coal bed gas gas well sleeve pipe, combined coal powder sand sediment pipe 5 is arranged, combined coal powder sand sediment pipe 5 is positioned at tubing string bottom, and in well, is positioned at the well-case perforating pars infrasegmentalis.The lower end degree of depth of combined coal powder sand sediment pipe 5 is 600m.(the bottom degree of depth is 550m.)
The maximum outside diameter 124mm of combined coal powder sand sediment pipe 5, length 30m; Going up of combined coal powder sand sediment pipe 5 upper ends becomes snapping head 51 connection screen casings 4.The maximum outside diameter 73mm of screen casing 4, length 2m; Screen casing 4 maximums diameter of hole are 80 orders.The following guide sub 41 of the special-purpose plunger displacement pump 3 of the coal bed gas well that is threaded in the upper end of screen casing 4, the length 6m of the special-purpose plunger displacement pump 3 of coal bed gas well.The special-purpose plunger displacement pump 3 of coal bed gas well is in well inner sleeve perforated interval bottom.3 tubing strings at the special-purpose plunger displacement pump of coal bed gas well become snapping head 23 upper ends connection oil pipe 2, and oil pipe 2 upper ends are to well head; The external diameter of oil pipe 2 is 73mm, internal diameter 62mm, length 562m.Sucker rod 1 is arranged in oil pipe 2, and the external diameter of sucker rod 1 is 19mm.The roofbolt that the lower end of sucker rod 1 connects the special-purpose plunger displacement pump 3 of coal bed gas well becomes snapping head 21.Annular space between internal surface of sleeve pipe and combined coal powder sand sediment pipe 5 outer walls is sealed in that fluid sealant bowl 53 is arranged on the combined coal powder sand sediment pipe 5.The lower end that is oil pipe 2 connects the special-purpose plunger displacement pump 3 of coal bed gas well, and the lower end of the special-purpose plunger displacement pump 3 of coal bed gas well connects screen casing 4, and the lower end of screen casing 4 connects combined coal powder sand sediment pipe 5.
Consult Fig. 2 a.Combined coal powder sand sediment pipe 5 mainly is made up of last change snapping head 51, central tube 52, fluid sealant bowl 53, shear pin 54, fishing joint 55, sand sediment pipe 56, sand sediment pipe lower contact 57, sand sediment pipe top connection 58, guide sub 59, plug pin 60 and plug 61.There is internal thread at the two ends up and down of last change snapping head 51, and the upper end internal thread can be connected the lower end of tubing string.The lower end internal thread of last change snapping head 51 connects a central tube 52; The lower end outer wall of central tube 52 has screw thread, and the lower end outer wall of central tube 52 is processed with a cannelure, and the shape of cross section of cannelure is a rectangle, and the width 6mm of cannelure is identical with the diameter of shear pin 54.Fishing joint 55 screw top are connected central tube 52 lower ends; At even four the threaded apertures that distribute of the root of fishing joint 55 upper external thread; Shear pin 54 screws in the threaded aperture; And the front end of shear pin 54 (diameter 6mm) gets in the cannelure of central tube 52 lower ends, and shear pin 54 is fixed together central tube 52 and fishing joint 55.The circular cylinder that outside protrusion is arranged in the fishing joint 55; On the outer wall of the circular cylinder that outwards protrudes, external screw thread is arranged; On the circular cylinder that outwards protrudes, be evenly distributed with six axial holes, pulverized coal particle can get in the combined type sand sediment pipe of bottom through axial hole.
On the outer wall of the circular cylinder that fishing joint 55 is outwards protruded, external screw thread is arranged; A fluid sealant bowl 53 has been threaded on the circular cylinder that fishing joint 55 is outwards protruded; Fluid sealant bowl 53 is the stairstepping cylinder, and the external diameter 124mm of fluid sealant bowl 53 upper ends is identical with casing inner diameter.The lower end sulfuration of fluid sealant bowl 53 has on the cylindrical shape steel body, and internal thread is arranged at the bottom of cylindrical shape steel body, and cylindrical shape steel body is threaded in the fishing joint 55.
Consult Fig. 2 b.The lower end of fishing joint 55 six the combined type sand sediment pipes that have been threaded, the combined type sand sediment pipe is made up of sand sediment pipe 56, sand sediment pipe top connection 58 and sand sediment pipe lower contact 57; Sand sediment pipe 56, sand sediment pipe top connection 58 are threaded successively with sand sediment pipe lower contact 57 and are in the same place; Sand sediment pipe 56 is the steel pipe of external diameter 100mm, and there is internal thread at sand sediment pipe 56 two ends; Sand sediment pipe lower contact 57 is an external diameter 100mm steel pipe, and there is external screw thread sand sediment pipe lower contact 57 upper ends, and there is internal thread the lower end; Sand sediment pipe top connection 58 is an external diameter 100mm steel pipe, and there is internal thread at sand sediment pipe top connection 58 two ends.
The guide sub 59 that is threaded in the combined type sand sediment pipe lower end of foot, guide sub 59 is made up of large diameter steel pipe, middle part conical tube and the lower end external diameter 58mm minor-diameter steel-tube of upper end external diameter 100mm; In guide sub 59 lower end minor-diameter steel-tubes, insert a cylinder bodily form plug 61, be fixed together through horizontal plug pin 60 between guide sub 59 and the cylinder bodily form plug 61.
Consult Fig. 3 a and Fig. 3 b.The special-purpose plunger displacement pump 3 of described coal bed gas well, mainly by roofbolt become that snapping head 21, the valve bonnet 22 that moves about, tubing string become that snapping head 23, the valve ball 24 that moves about, the valve seat 25 that moves about, travelling valve joint 26, pump barrel set upright 27, pump barrel 28, go up urceolus 29, plunger 30, pump barrel sealing ring 31, urceolus joint sealing circle 32, urceolus joint 33, down urceolus 34, plunger guide 35, standing valve cover 36, fixed valve ball 37, fixed valve base 38, fixed valve base sealing ring 39, standing valve extension pipe 40, guide sub 41 and following urceolus sealing ring 42 are formed down.The length of the special-purpose plunger displacement pump of coal bed gas well is 6m, and maximum outside diameter is 110mm.
Consult Fig. 3 a.Roofbolt becomes snapping head 21 upper ends has internal thread.There is external screw thread the lower end that roofbolt becomes snapping head 21, and the valve bonnet 22 that moves about is threaded in the lower end of roofbolt change snapping head 21.The valve bonnet 22 that moves about is cylindrical shape, and the external diameter of moving valve bonnet 22 is 42mm.On the wall of valve bonnet 22 that moves about, be evenly equipped with three axial weep holes; Move about be provided with in the valve bonnet 22 move about valve ball 24 with move about valve seat 25; Move about valve ball 24 on the top of moving about valve seat 25, and the valve seat 25 that moves about is fixed in the valve bonnet 22 that moves about with the valve ball 24 that moves about forms the travelling valve assembly.Move about the lower surface of upper surface and weep hole of valve seat 25 at same horizontal plane.There is internal thread the move about lower end of valve bonnet 22; The move about lower end of valve bonnet 22 connects travelling valve joint 26, and the external diameter of travelling valve joint 26 is 42mm, and travelling valve joint 26 has centre bore; The lower end thread connecting plunger 30 of travelling valve joint 26; The external diameter 38mm of plunger 30, plunger 30 has centre bore, and the lower end of plunger 30 connects plunger guide head 35.
Tubing string becomes snapping head 23 maximum outside diameters and is 110mm.Tubing string becomes snapping head 23 upper ends has internal thread.There is external screw thread the lower end that tubing string becomes snapping head 23, urceolus 29 on the lower end of tubing string change snapping head 23 is threaded, and last urceolus 29 external diameters are 110mm.There is internal thread the lower end of last urceolus 29, and there is urceolus joint sealing circle 32 the be threaded upper end of urceolus joint 33, the lower end of last urceolus 29 between last urceolus 29 and the urceolus joint 33.Urceolus joint 33 maximum outside diameters are 110mm, and there is external screw thread the lower end of urceolus joint 33, the lower end of urceolus joint 33 urceolus 34 that is threaded down, and following urceolus 34 external diameters are 110mm.Urceolus joint 33 has centre bore, and plunger 30 passes the centre bore of urceolus joint 33.There is internal thread the upper end of urceolus joint 33, and the upper end screw thread of socket joint head 33 is connected with pump barrel 28 outside, the internal diameter 38mm of pump barrel 28, external diameter 52mm.Move about the external diameter of valve bonnet 22 than the big 4mm of pump barrel 28 internal diameters.Between urceolus joint 33 and the pump barrel 28 pump barrel sealing ring 31 is arranged.Plunger 30 is slidingly matched between plunger 30 outer walls and pump barrel 28 inwalls in pump barrel 28.There is external screw thread pump barrel 28 upper ends, and the upper end screw thread of pump barrel 28 is connected with pump barrel and sets upright 27, and pump barrel is set upright 27 and is annular, and pump barrel is held up
27 internal diameter is 52mm, pump barrel hold up 27 can be enclosed within pump barrel 28 the outside, it is M95mm that pump barrel is set upright 27 external screw thread.The axially extending bore that pump barrel is held up 27 to be evenly equipped with 12 diameters be 10mm.These axial holes can make coal dust pass through, and get into the sand setting tubing string.Urceolus joint 33 is divided into two parts that annular sand setting space is all arranged up and down with pump barrel, can prevent that coal dust is to the influence of standing valve system and travelling valve system in the manufacturing process.
Consult Fig. 3 b.There is internal thread the lower end of following urceolus 34, and guide sub 41 under the lower end of urceolus 34 is threaded down has following urceolus sealing ring 42 between following guide sub 41 and the following urceolus 34.Following guide sub 41 has centre bore, and there is internal thread the upper end of following guide sub 41 centre bores, and the lower end of standing valve extension pipe 40 (length 500mm) is threaded in down the upper end of guide sub 41 centre bores.The upper end screw thread of deciding valve extension pipe 40 is connected with standing valve cover 36, on standing valve cover 36 walls axial hole is arranged.Between standing valve extension pipe 40 and standing valve cover 36, fixed valve base sealing ring 39 is arranged.Be fixed with fixed valve base 38 in the standing valve cover 36, fixed valve ball 37 arranged on the top of fixed valve base 38.The fixed valve assembly that standing valve cover 36, fixed valve ball 37, fixed valve base 38, fixed valve base sealing ring 39 are formed.Get into tiny pulverized coal particle in the pump in the annular space of effect deposit between standing valve extension pipe 40 and following urceolus 34 of gravity own from standing valve, thereby avoided coal dust to be deposited on causing fixed valve ball 37 to be stuck on the fixed valve assembly and the thrashing that produces.Two parts all have annular sand setting space up and down, can prevent that coal dust is to the influence of standing valve system and travelling valve system in the manufacturing process.

Claims (4)

1. a coal bed gas well drags for coal dust, water pumping gas production integrated pipe column, mainly is made up of sucker rod (1), oil pipe (2), the special-purpose plunger displacement pump (3) of coal bed gas well, screen casing (4) and combined coal powder sand sediment pipe (5); It is characterized in that: combined coal powder sand sediment pipe (5) is arranged in coal bed gas gas well sleeve pipe, and combined coal powder sand sediment pipe (5) is positioned at tubing string bottom, and in well, is positioned at the well-case perforating pars infrasegmentalis; Going up of combined coal powder sand sediment pipe (5) upper end becomes snapping head (51) connection screen casing (4); The following guide sub (41) of the special-purpose plunger displacement pump of the coal bed gas well that is threaded in the upper end of screen casing (4) (3), the special-purpose plunger displacement pump of coal bed gas well (3) is in well inner sleeve perforated interval bottom; Tubing string at the special-purpose plunger displacement pump of coal bed gas well (3) becomes snapping head (23) upper end connection oil pipe (2), and oil pipe (2) upper end is to well head; Sucker rod (1) is arranged in oil pipe (2), and the roofbolt that the lower end of sucker rod (1) connects the special-purpose plunger displacement pump of coal bed gas well (3) becomes snapping head (21).
2. coal bed gas well according to claim 1 drags for coal dust, water pumping gas production integrated pipe column, it is characterized in that: described combined coal powder sand sediment pipe (5) mainly is made up of last change snapping head (51), central tube (52), fluid sealant bowl (53), shear pin (54), fishing joint (55), sand sediment pipe (56), sand sediment pipe lower contact (57), sand sediment pipe top connection (58), guide sub (59), plug pin 60 and plug (61); There is internal thread at the two ends up and down of last change snapping head (51); The lower end internal thread of last change snapping head (51) connects a central tube (52); The lower end outer wall of central tube (52) has screw thread, and the lower end outer wall of central tube (52) is processed with a cannelure, and the shape of cross section of cannelure is a rectangle, and the width of cannelure is identical with the diameter of shear pin (54); Fishing joint (55) screw top is connected central tube (52) lower end; At even four the threaded apertures that distribute of the root of fishing joint (55) upper external thread; Shear pin (54) screws in the threaded aperture; And the front end of shear pin (54) gets in the cannelure of central tube (52) lower end, and shear pin (54) is fixed together central tube (52) and fishing joint (55); The circular cylinder that outside protrusion is arranged in the fishing joint (55) has external screw thread on the outer wall of the circular cylinder that outwards protrudes, on the circular cylinder that outwards protrudes, be evenly distributed with axial hole;
On the outer wall of the circular cylinder that fishing joint (55) is outwards protruded, external screw thread is arranged; A fluid sealant bowl (53) has been threaded on the circular cylinder that fishing joint (55) is outwards protruded; Fluid sealant bowl (53) is the stairstepping cylinder, and the external diameter of fluid sealant bowl (53) upper end is identical with casing inner diameter;
The lower end of fishing joint (55) 2~8 the combined type sand sediment pipes that have been threaded, the combined type sand sediment pipe is made up of sand sediment pipe (56), sand sediment pipe top connection (58) and sand sediment pipe lower contact (57); Sand sediment pipe (56), sand sediment pipe top connection (58) and sand sediment pipe lower contact (57) are threaded together successively; Sand sediment pipe (56) is a steel pipe, and there is internal thread at sand sediment pipe (56) two ends; Sand sediment pipe lower contact (57) is a steel pipe, and there is external screw thread sand sediment pipe lower contact (57) upper end, and there is internal thread the lower end; Sand sediment pipe top connection (58) is a steel pipe, and there is internal thread at sand sediment pipe top connection (58) two ends;
The guide sub (59) that is threaded in the combined type sand sediment pipe lower end of foot, guide sub (59) is made up of upper end large diameter steel pipe, middle part conical tube and lower end minor-diameter steel-tube; In the minor-diameter steel-tube of guide sub (59) lower end, insert a cylinder bodily form plug (61), be fixed together through horizontal plug pin (60) between guide sub (59) and the cylinder bodily form plug (61).
3. coal bed gas well according to claim 2 drags for coal dust, water pumping gas production integrated pipe column; It is characterized in that; The lower end sulfuration of fluid sealant bowl (53) has on the cylindrical shape steel body, and internal thread is arranged at the bottom of cylindrical shape steel body, and cylindrical shape steel body is threaded in the fishing joint (55).
4. coal bed gas well according to claim 1 drags for coal dust, water pumping gas production integrated pipe column, it is characterized in that: the special-purpose plunger displacement pump of described coal bed gas well (3) mainly by roofbolt become that snapping head (21), the valve bonnet that moves about (22), tubing string become that snapping head (23), the valve ball that moves about (24), the valve seat that moves about (25), travelling valve joint (26), pump barrel are set upright (27), pump barrel (28), gone up urceolus (29), plunger (30), pump barrel sealing ring (31), urceolus joint sealing circle (32), urceolus joint (33), down urceolus (34), plunger guide head (35), standing valve cover (36), fixed valve ball (37), fixed valve base (38), fixed valve base sealing ring (39), standing valve extension pipe (40), guide sub (41) and following urceolus sealing ring (42) are formed down; Roofbolt becomes snapping head (21) upper end has internal thread; There is external screw thread the lower end that roofbolt becomes snapping head (21), and the valve bonnet (22) that moves about is threaded in the lower end of roofbolt change snapping head (21); The valve bonnet (22) that moves about is a cylindrical shape; On the wall of the valve bonnet that moves about (22), be evenly equipped with axial weep hole; Move about and be provided with valve ball that moves about (24) and the valve seat that moves about (25) in the valve bonnet (22); Move about valve ball (24) on the top of the valve seat that moves about (25), and valve seat that moves about (25) and the valve ball that moves about (24) are fixed on forms the travelling valve assembly in the valve bonnet that moves about (22); Move about the lower surface of upper surface and weep hole of valve seat (25) at same horizontal plane; There is internal thread the move about lower end of valve bonnet (22); The move about lower end of valve bonnet (22) connects travelling valve joint (26), and travelling valve joint (26) has centre bore, the lower end thread connecting plunger (30) of travelling valve joint (26); Plunger (30) has centre bore, and the lower end of plunger (30) connects plunger guide head (35);
Tubing string becomes snapping head (23) upper end has internal thread; There is external screw thread the lower end that tubing string becomes snapping head (23), is threaded in the lower end of tubing string change snapping head (23) and goes up urceolus (29); There is internal thread the lower end of last urceolus (29), and there is urceolus joint sealing circle (32) the be threaded upper end of urceolus joint (33), the lower end of last urceolus (29) between last urceolus (29) and the urceolus joint (33); There is external screw thread the lower end of urceolus joint (33), the lower end of urceolus joint (33) urceolus (34) that is threaded down; Urceolus joint (33) has centre bore, and plunger (30) passes the centre bore of urceolus joint (33); There is internal thread the upper end of urceolus joint (33), and the upper end screw thread of socket joint head (33) is connected with pump barrel (28) outside, between urceolus joint (33) and the pump barrel (28) pump barrel sealing ring (31) is arranged; Plunger (30) is slidingly matched between plunger (30) outer wall and pump barrel (28) inwall in pump barrel (28); There is external screw thread pump barrel (28) upper end, and the upper end screw thread of pump barrel (28) is connected with pump barrel and sets upright (27), and pump barrel is set upright (27) and is annular, and pump barrel is set upright (27) has axially extending bore;
There is internal thread the lower end of following urceolus (34), and guide sub (41) under the lower end of urceolus (34) is threaded down has following urceolus sealing ring (42) between following guide sub (41) and the following urceolus (34); Following guide sub (41) has centre bore, and there is internal thread the upper end of following guide sub (41) centre bore, and the lower end of standing valve extension pipe (40) is threaded in down the upper end of guide sub (41) centre bore; The upper end screw thread of deciding valve extension pipe (40) is connected with standing valve cover (36), on standing valve cover (36) wall axial hole is arranged; Between standing valve extension pipe (40) and standing valve cover (36), fixed valve base sealing ring (39) is arranged; Be fixed with fixed valve base (38) in the standing valve cover (36), fixed valve ball (37) arranged on the top of fixed valve base (38); The fixed valve assembly that standing valve cover (36), fixed valve ball (37), fixed valve base (38), fixed valve base sealing ring (39) are formed.
CN201210250254.XA 2012-07-19 2012-07-19 Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column Active CN102797422B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210250254.XA CN102797422B (en) 2012-07-19 2012-07-19 Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210250254.XA CN102797422B (en) 2012-07-19 2012-07-19 Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column

Publications (2)

Publication Number Publication Date
CN102797422A true CN102797422A (en) 2012-11-28
CN102797422B CN102797422B (en) 2014-12-24

Family

ID=47196701

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210250254.XA Active CN102797422B (en) 2012-07-19 2012-07-19 Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column

Country Status (1)

Country Link
CN (1) CN102797422B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321613A (en) * 2013-07-03 2013-09-25 胜利油田隆迪石油技术(装备)有限责任公司 Method and device for exploiting coal bed methane by discharging water and pulverized coal
CN103397858A (en) * 2013-07-24 2013-11-20 濮阳泰和油气工程有限公司 Drainage and production combined sand washing machine for coal bed gas and method for applying drainage and production combined sand washing machine
CN103899521A (en) * 2014-04-04 2014-07-02 天津机辆轨道交通装备有限责任公司 Automatic intermittent coal bed gas draining and generating method and device thereof
CN103912227A (en) * 2014-02-18 2014-07-09 曹广宇 Drilling powder receiver
CN106481281A (en) * 2015-08-25 2017-03-08 中国石油天然气股份有限公司 A kind of tubular column structure of coal bed gas well and coal bed gas well system
CN108071365A (en) * 2016-11-10 2018-05-25 中国石油天然气股份有限公司 A kind of coal bed gas gas production, draining and water injection integral pipe column
CN111201377A (en) * 2017-12-19 2020-05-26 Qed环境系统有限责任公司 Fluid pump with self-cleaning air inlet structure
CN114151061A (en) * 2021-12-13 2022-03-08 东营市福利德石油科技开发有限责任公司 Coal-bed gas production coal dust prevention device
CN115075745A (en) * 2022-08-23 2022-09-20 东营政阳自动化科技有限公司 Oil is safety joint in pit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476925A (en) * 1982-09-24 1984-10-16 Cox Pope D Sand shield for bottom hole pumps
CN2527741Y (en) * 2001-11-21 2002-12-25 中国石化胜利油田有限公司胜利采油厂 Sandpump
US20040129428A1 (en) * 2002-12-20 2004-07-08 Kelley Terry Earl Plunger lift deliquefying system for increased recovery from oil and gas wells
CN2637722Y (en) * 2003-07-17 2004-09-01 中国石油天然气股份有限公司 Shake out well anti-sand block oil pump tubular column
US20040238179A1 (en) * 2003-05-28 2004-12-02 Murray Rick G. Riser pipe gas separator for well pump
JP2005330773A (en) * 2004-05-21 2005-12-02 Taisei Corp Methane gas collecting device and collecting method
CN201826818U (en) * 2010-10-29 2011-05-11 于宝奎 Water draining and gas producing device special for screw pump of coal bed gas
CN201934068U (en) * 2010-12-28 2011-08-17 中国石油天然气股份有限公司 Anti-eccentric wear roof bolt of oil pump well

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476925A (en) * 1982-09-24 1984-10-16 Cox Pope D Sand shield for bottom hole pumps
CN2527741Y (en) * 2001-11-21 2002-12-25 中国石化胜利油田有限公司胜利采油厂 Sandpump
US20040129428A1 (en) * 2002-12-20 2004-07-08 Kelley Terry Earl Plunger lift deliquefying system for increased recovery from oil and gas wells
US20040238179A1 (en) * 2003-05-28 2004-12-02 Murray Rick G. Riser pipe gas separator for well pump
CN2637722Y (en) * 2003-07-17 2004-09-01 中国石油天然气股份有限公司 Shake out well anti-sand block oil pump tubular column
JP2005330773A (en) * 2004-05-21 2005-12-02 Taisei Corp Methane gas collecting device and collecting method
CN201826818U (en) * 2010-10-29 2011-05-11 于宝奎 Water draining and gas producing device special for screw pump of coal bed gas
CN201934068U (en) * 2010-12-28 2011-08-17 中国石油天然气股份有限公司 Anti-eccentric wear roof bolt of oil pump well

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321613A (en) * 2013-07-03 2013-09-25 胜利油田隆迪石油技术(装备)有限责任公司 Method and device for exploiting coal bed methane by discharging water and pulverized coal
CN103397858A (en) * 2013-07-24 2013-11-20 濮阳泰和油气工程有限公司 Drainage and production combined sand washing machine for coal bed gas and method for applying drainage and production combined sand washing machine
CN103397858B (en) * 2013-07-24 2015-11-04 濮阳泰和油气工程有限公司 Coal bed gas extraction associating sand washing machine and application process
CN103912227A (en) * 2014-02-18 2014-07-09 曹广宇 Drilling powder receiver
CN103899521A (en) * 2014-04-04 2014-07-02 天津机辆轨道交通装备有限责任公司 Automatic intermittent coal bed gas draining and generating method and device thereof
CN106481281A (en) * 2015-08-25 2017-03-08 中国石油天然气股份有限公司 A kind of tubular column structure of coal bed gas well and coal bed gas well system
CN108071365A (en) * 2016-11-10 2018-05-25 中国石油天然气股份有限公司 A kind of coal bed gas gas production, draining and water injection integral pipe column
CN108071365B (en) * 2016-11-10 2020-03-10 中国石油天然气股份有限公司 Coal bed gas production, drainage and water injection integrated tubular column
CN111201377A (en) * 2017-12-19 2020-05-26 Qed环境系统有限责任公司 Fluid pump with self-cleaning air inlet structure
CN114151061A (en) * 2021-12-13 2022-03-08 东营市福利德石油科技开发有限责任公司 Coal-bed gas production coal dust prevention device
CN114151061B (en) * 2021-12-13 2023-06-30 东营市福利德石油科技开发有限责任公司 Coal dust prevention device for coal bed gas production
CN115075745A (en) * 2022-08-23 2022-09-20 东营政阳自动化科技有限公司 Oil is safety joint in pit
CN115075745B (en) * 2022-08-23 2022-12-16 大庆市奈固石油机械设备制造有限公司 Oil is safety joint in pit

Also Published As

Publication number Publication date
CN102797422B (en) 2014-12-24

Similar Documents

Publication Publication Date Title
CN102797422A (en) Coal bed gas well pulverized coal salvaging, water pumping gas production integrated tubular column
US9850744B2 (en) Method for extracting coalbed gas through water and coal dust drainage and a device thereof
CN207568578U (en) Flood suction tubing string
CN102536144B (en) Coal-seam gas dual-channel well-washing valve
CN102817594B (en) Horizontal well water pumping gas production method and device
CN204754881U (en) Double -barrelled gas well flow string parallels
CN201554633U (en) Falling object protective oil pump capable of performing annulus logging
CN103806882B (en) Liquid method and device is adopted in a kind of gaslift
CN203420698U (en) Well completion fracture integrated pipe column for open hole horizontal well
CN203239303U (en) Extraction device used for injection and extraction of same well
CN104879097A (en) Gas well production string provided with double parallel pipes
RU2002116974A (en) A method of producing liquid and gas from a well and a sucker rod pump for its implementation
RU178909U1 (en) Hydraulic nozzle
CN103821471B (en) The processing method of the outer cement sheath of cementing completion ethmoid canal,posterior
CN108505985A (en) A kind of gas anchor of exploiting coal bed methane
CN202745779U (en) Combined coal powder sand-settling pipe
CN201794557U (en) Ultrasonic atomization drainer for gas well
CN210598927U (en) Special downhole hydraulic motor for oil production
CN207879289U (en) Well workover reacting cycle drags for sand sand-precipitating tube
RU107275U1 (en) BORE FILTER WITH THROUGH VALVE
CN103510921B (en) Have and flow hollow pumping equipment mutually
CN205314943U (en) Super deep water horizontal well prevent sinking bits tool. s
CN202833058U (en) Special plunger pump for coal-bed gas well
CN205400640U (en) Deep -sea sediment wire line coring drilling tool suitable for seabed rig
CN205477549U (en) Nearly well spacing well group single tube does not have pole hydraulic pressure pilot production device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant