CN201265379Y

CN201265379Y - Blowdown recovery apparatus for well drilling

Info

Publication number: CN201265379Y
Application number: CNU2008203022445U
Authority: CN
Inventors: 喻著成; 赵晨; 周安辉; 赵志华; 贾明磊; 许建忠; 陈凌飞
Original assignee: WEST DRILLING INTERNATIONAL DRILLING Co
Current assignee: WEST DRILLING INTERNATIONAL DRILLING Co
Priority date: 2008-09-25
Filing date: 2008-09-25
Publication date: 2009-07-01
Anticipated expiration: 2018-09-25

Abstract

The utility model relates to a drilling blowdown recovery device comprising a pumping elbow, a lower end inlet of the pumping elbow is arranged in a sewage slurry pond, a high-pressure pipe nipple is fixedly mounted on the pumping elbow, a high-pressure nozzle is fixedly mounted on the inner end of the high-pressure pipe nipple, and the spout of the high-pressure nozzle is aligned with the outflow direction of liquid of the pumping elbow. The utility model has reasonable and compact structure, strong practicability, convenient operation and high security, avoids the problems that the original sewage pump has long pumping time, is easy to be out of order, wastes slurry and is unsafe by using the device, and greatly reduces the workload. The utility model is particularly used for drilling operation at a stratum and a seaside which are easy to leak and collapse, generally, a large borehole has the well depth of 50-200 m, under the condition without mounting an overhead outlet, a circulative drilling operation can be set up by using the device, the purposes of blowdown and recovering useful slurry can be achieved, and the cost is saved.

Description

Drilling well blowdown retracting device

One, technical field

The utility model relates to drilling well blowdown retracting device, is a kind of drilling well blowdown retracting device.

Two, background technology

In drillng operation, regularly well head sewage is discharged and useful mud is reclaimed, can avoid the contaminated and corrosion of rig surrounding devices, save mud amount.Simultaneously, owing to, must guarantee that well head does not have sewage, in case electric leakage causes casualties during electric welding, therefore in time, efficiently the emptying of well head sewage is very important cutting sleeve pipe, dress during shaft mouth operation.But, use foul water pump that well head sewage is discharged at present, because swabbing pressure is not enough, discharge capacity is little, it is more to waste time, and can not fully sewage in the well head pond be pumped, when causing soldering sleeve and wellhead assembly, the time leaky is arranged, brought very big potential safety hazard.

Three, summary of the invention

The utility model provides a kind of drilling well blowdown retracting device, and it has overcome the foot of prior art, and the well head blowdown that can solve existing drilling well is effectively reclaimed and safe problem, and its reasonable and compact in structure is practical, easy to operate, safe.

The technical solution of the utility model realizes by following measure: a kind of drilling well blowdown retracting device, it comprises the bend pipe that draws water, the lower end import of this bend pipe that draws water places the sewage mud pit, on the bend pipe that draws water, be installed with the high pressure pipe nipple, the inner at the high pressure pipe nipple is installed with high pressure nozzle, and the fluid that the spout of this high pressure nozzle is aimed at the bend pipe that draws water flows out direction.

Be further optimization and/or improvements below to above-mentioned utility model technical scheme:

Can be installed with union in above-mentioned high pressure pipe nipple outer end.

Above-mentioned union can be connected by the outlet of high-pressure hose with the high pressure vertical tube gate of borehole pump.

Above-mentioned high pressure pipe nipple can be fixedly mounted in the 120 degree bending sections of bend pipe near the sewage mud pit that draw water.

On the outlet section of the above-mentioned bend pipe that draws water the mud veclamation pipe can be installed, this mud veclamation pipe leads to the mud veclamation pond, and the bend pipe that draws water leads to sewage reservoir, at the port of export of the bend pipe that draws water Pollution discharge sluise gate is installed, and the mud veclamation gate is installed on the mud veclamation pipe.

Above-mentioned high pressure nozzle interior diameter can be 15 millimeters to 18 millimeters.

Above-mentioned high pressure pipe nipple external diameter can be 63 millimeters, and high pressure pipe nipple length is 100 millimeters.

The utility model reasonable and compact in structure, practical, easy to operate, safe, by the use of this device, avoided former long with the foul water pump suction time, pump is perishable, mud waste, unsafe problem, and has significantly reduced workload.Particularly open leakiness one, when easily collapsing stratum and seashore drillng operation, one opens the big hole well depth generally at 50-200 rice, do not needing to install under the situation of overhead outlet, use the utility model can set up circulation, creep into operation, reach the purpose of blowdown, the useful mud of recovery, saved cost, guaranteed shaft mouth operation safety.

Four, description of drawings

Accompanying drawing 1 is the structural representation of the utility model most preferred embodiment.

Coding in the accompanying drawing is respectively: 1 is the bend pipe that draws water, and 2 is the sewage mud pit, and 3 is the high pressure pipe nipple, and 4 is high pressure nozzle, and 5 is Pollution discharge sluise gate, and 6 are the mud veclamation pipe, and 7 are the mud veclamation gate.

Five, the specific embodiment

The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

As shown in Figure 1, this drilling well blowdown retracting device comprises the bend pipe 1 that draws water, the lower end import of this bend pipe 1 that draws water places sewage mud pit 2, on the bend pipe 1 that draws water, be installed with high pressure pipe nipple 3, be installed with high pressure nozzle 4 in the inner of high pressure pipe nipple 3, the fluid that the spout of this high pressure nozzle 4 is aimed at the bend pipe 1 that draws water flows out direction.

Can according to actual needs above-mentioned drilling well blowdown retracting device be made further optimization and/or improvements:

As shown in Figure 1, high pressure pipe nipple 3 outer ends are installed with union, this union is connected by the outlet of high-pressure hose with the high pressure vertical tube gate of borehole pump, like this can be by borehole pump and high pressure nozzle 4 inject high pressure fluid in the bend pipe 1 that draws water, thereby make the import of the bend pipe 1 that draws water produce suction and the fluids in the sewage mud pit 2 sucked.

In order to improve performance, as shown in Figure 1, high pressure pipe nipple 3 preferably is fixedly mounted in the 120 degree bending sections of bend pipe 1 near sewage mud pit 2 that draw water, and the high pressure nozzle interior diameter is preferably 15 millimeters to 18 millimeters, high pressure pipe nipple external diameter is 63 millimeters, and high pressure pipe nipple length is 100 millimeters.

As shown in Figure 1, on the outlet section of bend pipe 1 that draws water, mud veclamation pipe 6 is installed, this mud veclamation pipe 6 leads to the mud veclamation pond, the bend pipe 1 that draws water leads to sewage reservoir, the port of export at the bend pipe 1 that draws water is equipped with Pollution discharge sluise gate 5, mud veclamation gate 7 is installed on mud veclamation pipe 6, so just can as required recovery mud be sent into the mud veclamation pond or/and sewage reservoir.

Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

Use of the present utility model: pass through borehole pump, produce high negative pressure at high pressure nozzle 4 places, fluid in the sewage mud pit 2 just is inhaled in the bend pipe 1 that draws water, open sewage gate 5, fluid carries out in the sewage recovery pond, also can close sewage gate 5, open mud veclamation gate 7, the fluid in the sewage mud pit 2 is entered in the mud veclamation pond through mud veclamation pipe 6.

Claims

[claim 1] 1, a kind of drilling well blowdown retracting device, it is characterized in that comprising the bend pipe that draws water, the lower end import of this bend pipe that draws water places the sewage mud pit, on the bend pipe that draws water, be installed with the high pressure pipe nipple, the inner at the high pressure pipe nipple is installed with high pressure nozzle, and the fluid that the spout of this high pressure nozzle is aimed at the bend pipe that draws water flows out direction.
[claim 2] 2, drilling well blowdown retracting device according to claim 1 is characterized in that high pressure pipe nipple outer end is installed with union.
[claim 3] 3, drilling well blowdown retracting device according to claim 2 is characterized in that union is connected by the outlet of high-pressure hose with the high pressure vertical tube gate of borehole pump.
[claim 4] 4, according to claim 1 or 2 or 3 described drilling well blowdown retracting devices, it is characterized in that the high pressure pipe nipple be fixedly mounted on draw water bend pipe near the sewage mud pit 120 the degree bending sections in.
[claim 5] 5, according to claim 1 or 2 or 3 described drilling well blowdown retracting devices, it is characterized in that drawing water and the mud veclamation pipe is installed on the outlet section of bend pipe, this mud veclamation pipe leads to the mud veclamation pond, the bend pipe that draws water leads to sewage reservoir, the port of export at the bend pipe that draws water is equipped with Pollution discharge sluise gate, and the mud veclamation gate is installed on the mud veclamation pipe.
[claim 6] 6, drilling well blowdown retracting device according to claim 4, it is characterized in that drawing water and the mud veclamation pipe is installed on the outlet section of bend pipe, the mud veclamation pipe leads to the mud veclamation pond, the bend pipe that draws water leads to sewage reservoir, the port of export at the bend pipe that draws water is equipped with Pollution discharge sluise gate, and the mud veclamation gate is installed on the mud veclamation pipe.
[claim 7] 7, according to claim 1 or 2 or 3 described drilling well blowdown retracting devices, it is characterized in that the high pressure nozzle interior diameter is 15 millimeters to 18 millimeters.
[claim 8] 8, drilling well blowdown retracting device according to claim 6 is characterized in that the high pressure nozzle interior diameter is 15 millimeters to 18 millimeters.
[claim 9] 9, drilling well blowdown retracting device according to claim 1 and 2 is characterized in that high pressure pipe nipple external diameter is 63 millimeters, and high pressure pipe nipple length is 100 millimeters.
[claim 10] 10, drilling well blowdown retracting device according to claim 8 is characterized in that high pressure pipe nipple external diameter is 63 millimeters, and high pressure pipe nipple length is 100 millimeters.