CN2505584Y

CN2505584Y - Downhole electric sand-suction bailing device

Info

Publication number: CN2505584Y
Application number: CN 01250778
Authority: CN
Inventors: 徐凌堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-21
Filing date: 2001-09-21
Publication date: 2002-08-14
Anticipated expiration: 2011-09-21

Abstract

The utility model provides a downhole electric sand-suction bailing device which consists of a motor, a sand-suction pump and a sand bailer, wherein, water and sands are sucked into the sand bailer by the self-suction of the electric pump, and sands fall into the sand bailer after the sedimentation by a sand-blocking cap in a sand-sedimentation chamber, the downhole electric sand-suction bailing device is lifted to the ground by the prior well logging winch and cables, thereby the utility model can effectively bail sands up to the ground from the bottom of the well and has the advantages of quick elevation and accurate depth. For wells which are less than 2000m in depth, bailing sands once takes about 40 minutes, thereby avoiding sands to be pressed in the stratum and shortening the working cycle; moreover, the cost of sands washing is low, the working scope is from several hundred meters to 4000m, the utility model is capable of matching with different sand bailers based on different radiuses of wells, thereby the utility model has the advantages of simple and reasonable design, and is quite suitable to be popularized and applied on site.

Description

Down-hole electronic suction sand sand pumping device

The utility model relates to the downhole tool that uses on a kind of field produces, particularly a kind of down-hole electronic suction sand sand pumping device.

Oil-water well in process of production, a part is mobile with oil in the landing surface, gas, water of looser sand in the stratum, from perforation eye or formation fracture, flow in the well together, when these sands deposit to a certain degree in the shaft bottom, just flooded pay interval, having caused oil well to stop up can not ordinary production, and for this reason, the oil recovery factory has carried out the sand washing operation.Former sand washing process is to inject water from ground through oil pipe with pump truck, strength by water is taken sand to ground from the shaft bottom, because sand proportion is greater than water, and be up to be with from the down-hole of 1000--2000 rice, most parts of sand can not be taken out of like this, but pushes back the stratum again under the pressure of pump truck, and these sands can flow back in the well again in process of production very soon, increased oil well operation number of times, directly influenced oil well output and increased cost for oil production.

The purpose of this utility model is to provide a kind of down-hole electronic suction sand sand pumping device, and it leans on electronic energy directly to take the sand of down-hole to ground, has prevented that sand is back to the shaft bottom, has improved operating efficiency, has reduced cost for oil production.

The purpose of this utility model is to realize like this, it is by motor, Sand pump, bailers three parts are formed, locator assembly (7) seat be magnetic in the motor part in the circuit case (6) on magnetic localizer fixed support (8), motor down-lead (9) one ends are connected with direct current generator (10), the other end is connected on the cable (1), the impeller of Sand pump (12) is connected with motor (10), be the baffle plate (13) of middle opening below, baffle plate (13) is close to filter sand net (14), and with shell (6), last sand suction pipe (17) is formed the sand setting chamber, sand block cap (15) is housed on the inner cylinder of last sand suction pipe (17), the described inner cylinder that has collar tie beam to support in the sand suction pipe (17) of going up, bailers shell (16) in the bailers is connected with last sand suction pipe (17), and it is connected to down sand suction pipe (20) down successively, sand suction pipe connector (18), sand suction pipe is set upright fixed mount (19).

The utility model has adopted the electric pump self-priming, water and sand are sucked in the tube, the sand block cap indoor by sand setting falls into bailers with sand through sedimentation, utilize existing logging winch and cable that this down-hole electronic suction sand sand pumping device is risen to ground, bailers can be divided into several joints, uses screwed connection, the sealing of " O " RunddichtringO, transportation and aboveground sand in the way are convenient in detachable assembling.

The utility model is reaped ground with the shaft bottom sand setting effectively owing to adopted the structure of electric pump, sand setting chamber, bailers, and the speed that removes is fast, and the degree of depth is accurate.2000 meters with interior well, drags for once about 40 minutes, has avoided sand to be pressed into the stratum, has shortened duty cycle, and the sand washing operating cost is low.Job area can be from hundreds of rice to 4000 meter,, sand pumping device can be according to the different bailers of different hole diameters apolegamys, and structure design is simple, rationally, is well suited for field popularization application.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is further specified.

The utility model is by well logging seven core cable 1; cable wire fixed cover 2; cap 3 on the fisher; top connection 4; sealing ring 5; circuit case 6; magnetic localizer assembly 7; magnetic localizer fixed support 8; motor down-lead 9; direct current generator 10; motor fixed screw 11; water pump vane 12; pump water aspirator baffle plate 13; sand filtering net 14; sand block cap 15; bailers shell 16; last sand suction pipe 17; sand suction pipe connector 18; sand suction pipe is set upright fixed mount 19; following sand suction pipe 20; sand-suction nozzle 21; pressure-equalizing pipe 22 and outfall 23 are formed; wherein cable connector is connected to form by cap 3 on cable wire fixed cover 2 and the fisher by well logging seven core cable 1, in have pressure-equalizing pipe 22 can protect motor down-lead.Top connection 4 divides with the circuit motor section and links to each other, with 5 sealings of " O " RunddichtringO.Logging cable 1 links to each other with sand pumping device by cable head, can be on ground remove sand pumping device and be the motor power supply with special hoist, the time actual measured amount well depth.Circuit motor part is made up of circuit case 6, magnetic localizer assembly 7, magnetic localizer fixed support 8, motor down-lead 9, direct current generator 10, motor fixed screw 11.The circuit motor section is divided into Sand pump provides power source, but is full of insulating oil in more than the circuit case pressure-bearing 40Mpa, with the balance down-hole pressure, guarantees the motor operate as normal.Sand pump mainly is made up of water pump vane 12 and pump water aspirator baffle plate 13, and impeller and motor connecting place seal with sealing ring, Sand pump when drawing water by upper and lower sand suction pipe in the bailers and sand-suction nozzle 21 with sand inspiration sand setting chamber.The sand setting chamber is made up of filter sand net 14, sand block cap 15.One outfall 23 is arranged in the Sand pump, can will discharge from the indoor isolated water of sand setting.Sand and water deposit in the bailers by deadweight after separate the sand setting chamber, after deposition is full, with winch bailers is played ground and pour out, and can repeat repeatedly, and sand all drags for only in well.Bailers is set upright fixed mount 19 and is formed by bailers shell 16, last sand suction pipe 17, following sand suction pipe 20, sand suction pipe connector 18, sand suction pipe.Suction cutter partly has a sand-suction nozzle, is connected with bailers, with the sealing of O RunddichtringO.

Existing logging winch and cable have been adopted in this invention, and the fast degree of depth of the speed that removes is accurate.2000 meters with interior well, drags for once about 40 minutes, owing to adopted the electric pump self-priming, has avoided pressing down by gravity that to cause instrument to be stuck in the well inner suction adjustable, can sand suction bailers with down-hole diameter 2--3mm in.Bailers can be divided into several joints, uses screwed connection, and " O " RunddichtringO seals, and transportation and aboveground sand in the way are convenient in detachable assembling, go into the well at every turn and can drag for sand 0.1--0.2m ³, 6--8 hour, can drag for sand 1m from 2000 meters down-holes ³, avoided sand to be pressed into the stratum, prolonged duty cycle.The sand washing operating cost is low to save time.Job area can be from hundreds of rice to 4000 meter, this is other sand washing, drag for sand technology can not than, sand pumping device can be according to the different bailers of different hole diameters apolegamys.

Claims

1, a kind of down-hole electronic suction sand sand pumping device, it is characterized in that: it is by motor, Sand pump, bailers three parts are formed, locator assembly (7) seat be magnetic in the motor part in the circuit case (6) on magnetic localizer fixed support (8), motor down-lead (9) one ends are connected with direct current generator (10), the other end is connected on the cable (1), the impeller of Sand pump (12) is connected with motor (10), be the baffle plate (13) of middle opening below, baffle plate (13) is close to filter sand net (14), and with shell (6), last sand suction pipe (17) is formed the sand setting chamber, sand block cap (15) is housed on the inner cylinder of last sand suction pipe (17), the described inner cylinder that has collar tie beam to support in the sand suction pipe (17) of going up, bailers shell (16) in the bailers is connected with last sand suction pipe (17), and it is connected to down sand suction pipe (20) down successively, sand suction pipe connector (18), sand suction pipe is set upright fixed mount (19).

2, a kind of down-hole according to claim 1 electronic suction sand sand pumping device, it is characterized in that: well logging seven core cable (1) is connected with cap (3) on the fisher by cable wire fixed cover (2), in pressure-equalizing pipe (22) is arranged, an outfall (23) is arranged on the Sand pump.