CN2471965Y

CN2471965Y - Sand Sucking pump

Info

Publication number: CN2471965Y
Application number: CN 00203988
Authority: CN
Inventors: 陆辉; 郑江; 齐振民
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-01
Filing date: 2000-03-01
Publication date: 2002-01-16
Anticipated expiration: 2010-03-01

Abstract

The utility model relates to a sand pump which can eliminate the setting sand in the petroleum exploration well; the pump comprises a sand pump and a bottom valve; wherein, the sand pump comprises a joint with a hole, a valve cover, a valve ball, a ball valve seat, a pressing cap of the valve seat, a piston rod, a pump barrel, a top cover for the pump barrel, a lower cover for the pump barrel, and a soft piston; the bottom valve comprises a joint, a valve plate shaft, a support for the valve plate shaft, a tension spring, a valve plate, a valve seat, and a sand shovel; the sand pump is connected with the bottom valve by a sand storage tube and a connecting part; the piston rod can move upward and downward, which can eliminate the setting sand in a shaft. The utility model has the advantages of simple structure, convenient operation, high efficiency of cleaning the sand, and safety and reliability.

Description

Sand pump

The utility model relates to pump, relates in particular to a kind of sand pump of removing sand setting in the petroleum production well.

At present, the on-the-spot method and apparatus of removing sand setting in the petroleum production well mainly is with cementing truck or pump truck the surface water to be pressurizeed, and by water tap, water hose, tubing and casing sand setting in the well is flushed out ground.It is many that these technologies and device exist auxiliary facility, and the preparation of construction time is long, and sand washing efficient is low, and a large amount of surface water enters and easily causes in the well oil reservoir to pollute in the stratum, drains into the sand cleaning fluid befouling environment on ground, and many deficiencies and shortcoming such as working security.

The purpose of this utility model provides a kind of both overcome above-mentioned deficiency of the prior art and shortcoming, has again that constructing operation is simple, corollary equipment is few, preparation of construction time weak point, sand washing efficient height, does not exist the surface water to enter in the well or discharge ground and the oil reservoir that causes and environmental pollution problem, the reliable sand pump of construction safety.

The purpose of this utility model reaches like this:

Comprise have valve bonnet, the sand pump of valve ball, valve seat, valve seat pressure cap, piston rod, soft piston, pump barrel loam cake, pump barrel, back-up ring, nut and pump barrel lower cover, its valve bonnet one end connects the ported sub that has with the inside and outside intercommunicating pore of pipe, the other end connects the valve ball pressure cap, and the valve bonnet inner chamber is installed valve ball and valve seat.Piston rod one end of tubulose links to each other with the ball valve pressure cap, and the other end is packed in the pump barrel.Pump barrel loam cake and pump barrel lower cover are installed in the two ends of pump barrel respectively.Soft piston is contained on the piston rod in the pump barrel.Deposit sandpipe one end and be connected with the pump barrel lower cover, the other end with comprise that joint, valve plate, valve plate are taken out, the bottom valve of valve shaft bearing, torsion spring, valve seat and sand shovel connects together.

The purpose of this utility model can also reach by following measure:

The piston rod of the utility model sand pump is the reducing tubular body, and an end links to each other with the valve seat pressure cap, and the other end is in pump barrel.The part of piston rod in pump barrel is variable-diameter structure, and soft piston is installed in the less bottom of external diameter.Soft piston is made tubular structure with sealing material, is enclosed within on the pump barrel inner piston rod, and piston space has back-up ring to be separated by, and its top withstands on the big shoulder of piston rod external diameter change, and the bottom is fixed on the piston rod, and its external diameter seals mutually with the pump barrel internal diameter.Pump barrel is a tubular structure, and two ends connect pump barrel loam cake and pump barrel lower cover respectively, and top has spiracle, and the pump barrel inwall seals mutually with soft piston.

The bottom valve of the utility model sand pump comprises joint, valve shaft, valve shaft bearing, torsion spring, valve plate, valve seat and sand shovel, and it is connected with sand pump pump barrel lower cover by depositing sandpipe.Valve seat is the tubular structure of band eccentric opening, and an end links to each other with joint, and the other end and sand shovel are connected as a single entity.The valve shaft bearing is arranged on the valve seat, valve shaft is installed on it, valve plate and torsion spring set are on valve shaft, and valve plate covers on the eccentric opening of valve seat.

The drawing of accompanying drawing is described as follows:

Fig. 1 is an assembling plan view of the present utility model;

Fig. 2 is an I partial enlarged drawing in the assembling plan view of the present utility model;

Fig. 3 is an II partial enlarged drawing in the assembling plan view of the present utility model;

Fig. 4 is the A-A sectional view among the utility model Fig. 3.

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, the utility model comprises two partly, that is: sand pump and bottom valve.Sand pump comprises ported sub 2, valve bonnet 5, valve ball 6, ball seat 7, valve seat pressure cap 8, piston rod 9, pump barrel loam cake 10, pump barrel 12, soft piston 13, back-up ring 14, nut 15, pump barrel lower cover 16.Connect oil pipe 1 on the ported sub 2, the bottom connects valve bonnet 5, has radially osculum 3 on it.Valve ball 6 and ball seat 7 are fixed on 5 li of valve bonnets by valve seat pressure cap 8.Piston rod 9 one ends link to each other with valve seat pressure cap 8, and the other end stretches in pump barrel 12.The part of piston rod 9 in pump barrel is variable-diameter structure, and the soft piston 13 of several joints (being 3 joints among the figure) is being overlapped in the bottom that external diameter is little.Pump barrel 12 upper ends connect pump barrel loam cake 10, and the lower end connects pump barrel lower cover 16, and top has spiracle 11.On the pump barrel loam cake 10 through hole is arranged, can pass through the little position of piston rod 9 diameters, and can not pass through the big position of diameter.Pump barrel lower cover 16 has through hole, the bottom with deposit sandpipe 18 and link to each other.

Have back-up ring 14 isolated therebetween as the soft piston 13 of Fig. 2, its top withstands on piston rod 9 diameters and becomes on the big shoulder, and the bottom is fixed on the piston rod that diameter diminishes with nut 15.

As Fig. 3 Fig. 4, bottom valve comprises joint 20, valve shaft 21, valve shaft bearing 22, torsion spring 23, valve plate 24, valve seat 25 and sand shovel 27.Connect on the joint 20 and deposit sandpipe 18, connect valve seat 25 down.Valve seat top connects valve shaft bearing 22, and valve shaft 21 is installed on it, is overlapping valve plate 24 and torsion spring 23 on the valve shaft, and torsion spring covers on the eccentric opening of valve seat 25 valve plate all the time.

The utility model was lowered to mounted sand pump in the pit shaft in when operation, and the sand shovel is touched on the sand face, simultaneously, ball valve was in the well under the liquid level, and just can take out the sand operation this moment.On carry the tubing string that connects sand pump, just drive piston rod and soft piston stroking upward, and bottom valve still is on the interior sand face of well, like this, space between valve ball and valve plate increases, and causes negative pressure, and the top valve ball is closed, the bottom valve plate is opened, and sand setting enters the valve plate epicoele through the valve plate cavity of resorption together and deposits in the sandpipe post in well liquid and the well.Deposited in the sandpipe post along with sand sucks continuously, pit shaft medium sand face descends, pump barrel and deposit the sandpipe post and also descend thereupon.When transferring tubing string, the space between valve ball and valve plate dwindles, and causes malleation, and valve plate is closed, and valve ball is opened, and well liquid enters the valve ball epicoele, flows back in the pit shaft by the radially osculum on the ported sub.Sand is stayed and is deposited in the sandpipe post owing to conduct oneself with dignity.By handling top tubing string constantly, sand constantly is inhaled into to be deposited in the sandpipe post, and pit shaft sand face constantly descends, and along with the decline of pit shaft sand face, wants spreading top tubing string above the well head.Handling top tubing string so repeatedly aspirates fully until the pit shaft sand setting and to finish.Again not descending when top tubing string lower dead center, illustrate that promptly sand is deposited in the sandpipe post by whole the suction in the well.At this moment, whole tubing strings and sand pump are tripped out ground, sand also just has been brought to ground.

The utility model has the following advantages compared with prior art:

1. construction is simple, easy to operate;

2. take out sand efficient height, safe and reliable;

3. save the expense of sand washing pump truck, water-tank lorry and corollary equipment and instrument;

4. polluted reservoir does not pollute ground environment.

The utility model is adapted to the engineering construction of various oil-water well sand wash operations.

Claims

1. sand pump, comprise and have valve bonnet (5), valve ball (6), valve seat (7), valve seat pressure cap (8), piston rod (9), pump barrel loam cake (10), pump barrel (12), soft piston (13), back-up ring (14), the sand pump of nut (15) and pump barrel lower cover (16), it is characterized in that valve bonnet (5) one end connecting band hole connectors (2), the other end connects valve ball pressure cap (8), its inner chamber is installed valve ball (6) and valve seat (7), piston rod (9) one ends of tubulose link to each other with valve ball pressure cap (8), the other end is packed in the pump barrel (12), pump barrel loam cake (10) and pump barrel lower cover (16) are installed in the two ends of pump barrel (12) respectively, soft piston (13) is contained on the piston rod (9) in the pump barrel (12), deposit sandpipe (18) one ends and be connected with pump barrel lower cover (16), the other end with comprise joint (20), valve shaft (21), valve shaft bearing (22), torsion spring (23), valve plate (24), the bottom valve of valve seat (25) and sand shovel (27) connects together.

2. sand pump according to claim 1 is characterized in that piston rod (9) is the reducing tubular body, and an end links to each other with valve seat pressure cap (8), and the other end is in pump barrel (12).

3. sand pump according to claim 2 is characterized in that the part of piston rod (9) in pump barrel (12) is variable-diameter structure, and soft piston (13) is installed in the less bottom of external diameter.

4. sand pump according to claim 3, it is characterized in that, soft piston (13) is made tubular structure with sealing material, be enclosed within on pump barrel (12) inner piston rod (9), soft piston space has back-up ring (14) to be separated by, its top withstands on the big shoulder of piston rod (9) external diameter change, and the bottom is fixed on the piston rod (9), and its external diameter seals mutually with pump barrel (12) internal diameter.

5. sand pump according to claim 1 and 2 is characterized in that pump barrel (12) is a tubular structure, and two ends connect pump barrel loam cake (10) and pump barrel lower cover (16), and spiracle (11) is arranged at top, and pump barrel (12) inwall seals mutually with soft piston (13).

6. according to claim 1 or 2 or 3 or 4 described sand pumps, it is characterized in that the tubular structure of valve seat (25) for the band eccentric opening, an end is connected with joint (20), and the other end and sand shovel (27) are connected as a single entity.

7. sand pump according to claim 6 is characterized in that valve shaft bearing (22) is arranged on the valve seat (25), and valve shaft (21) is installed on it, is overlapping valve plate (24) and torsion spring (23) on the valve shaft (21), and valve plate (24) covers on the eccentric opening of valve seat (25).