The pressure test must be 1.5 times higher than the maximum working pressure to ensure no penetration and leakage
.
If it cannot enter the station, it shall be circulated with mud tank, and the inlet and outlet pipelines shall be fixed with anchor
.
The construction personnel should stand in the windward
.
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(3) before lifting the derrick, check the internal and external guy ropes, traveling system and other ropes and rigging to eliminate all unnecessary attachment
.
Dismantle the wellhead (1) prepare the emergency wellhead for blowout prevention and clean it
.
(2) open the valve between the hydraulic oil tank and each pump, start the engine, and operate the hydraulic manual directional valve until the air pressure is normal, so as to extend the front and rear and the main jack of the derrick, find the level, and lock each hydraulic jack
.
The squeezing depth should be 50 meters above the top of the oil layer
.
(3) The pipe and rod shall be discharged at the position convenient for lifting and lowering operation and not affecting the process flow
.
The pipe body and buckle shall be carefully inspected when lowering the well pipe, and the through pipe gauge shall be used to prevent the operation quality from being affected by the pipe string
.
If the well killing fails, the cause should be found out, and the specific gravity of the killing fluid should not be blindly increased to prevent the formation from being lost circulation
.
(4) Pickling operation
.
Operation rules for pipe and pole discharge (1) three pipe bridges and four pole bridges are required, with the height between 0.30 m and 0.50 M
.
(2) The driller is not allowed to supply power source when hydraulic tong and Tong are not used
.
(6) The sleeves of the operators of hydraulic tongs and tongs must be tied up to prevent people from being injured by twisting into the tongs
.
When squeezing the well, people are not allowed to stand near the high-pressure pipeline or cross the pipeline to ensure the safety of construction personnel
.
Before well washing and killing, the screws of Christmas tree should be tightened and leveled
.
To get in touch with the relevant departments in advance, it is necessary to have anti poisoning measures, wear protective equipment (acidification clothes, masks, acidification gloves and boots), and do not make do with the construction
.
(4) The backup tong shall use 48 ″ pipe tong, one end of tail rope shall pass through the pipe tong, two rope clips shall be clamped at the tail hole and both ends of tail rope respectively, and the tail rope shall use more than 1 / 2 ″ steel wire rope
.
The well shall be shut in for 2-4 hours to make the oil and gas separate in the well, and then the gate shall be opened slowly to release the gas
.
Note: for the calibrated derrick, two on-board load-bearing guy ropes and four windproof guy ropes (two in front and two in back) should have uniform force, clamping distance 150-200 mm, clamp direction consistent, saddle horse seat facing the main rope end, traveling block perpendicular to the wellhead center, front and rear deviation less than 5 mm, left and right deviation less than 20 mm, and wear safety pin
.
5
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Two rope clips shall be clamped at both ends of steel wire rope
.
The pressure test shall be carried out with clean water to ensure that the inlet and outlet pipelines are not punctured and leaky before construction
.
Well killing (pickling) operation procedure (1) the performance of well killing fluid is reasonable, and the quantity is not less than 1.5 times of wellbore volume
.
Sit at the wellhead and wait for the next step
.
Only after the power source is cut off, can special person be assigned to repair and replace the tong teeth
.
Tighten the screws of the fixed lock pin of the derrick, continue to lift the second layer derrick to the working position, and assign special personnel to put on the fixed lock pin of the second layer derrick
.
(3) when hauling, there should be a special person on the vehicle to assist the driver to look out, and there should be a special person in front of and behind the vehicle to command
.
(4) Operate the manual directional valve to make the derrick leave the front support for about 200 mm and stay there for about 2 min
.
If the outlet goes into the anti-seepage oil pool, the anti-seepage oil pool should be in the downwind
.
(3) The lifting rope of hydraulic tong and Tong shall be 5 / 8 ″ or more steel wire rope
.
(2) when there are wires in the sky, avoid electric shock or scraping off the wires; when turning, avoid scraping left and right obstacles; when crossing the pipeline, avoid crushing, breaking, friction, fire and flying out to hurt people; when crossing the inclined dangerous section, prevent dragging over to hurt people; if effective safety measures cannot be taken, stop moving
.
(3) Before squeezing the well, the well killing equipment should be checked to ensure that the pump does not stop during the construction
.
After the poisoned person is separated from the gas source, they can be rescued
.
The inlet and outlet pipelines shall be made of special steel and hard pipelines
.
(5) When the derrick is close to the working position, the opening of the manual valve should be reduced to stop the operation after the derrick slowly reaches the working position
.
In order to repair, maintain, check and change the tong teeth, it is not allowed to extend the hand into the hydraulic tong, but to use special tools
.
(2) When the pipe and rod are discharged, the safe passage at the wellhead shall be smooth
.
(3) The pressure must be released before the wellhead is disassembled, and the wellhead can be disassembled only after the pressure is zero, otherwise the wellhead cannot be disassembled.
.
No one is allowed to stand on or off the moving object
.
each bridge uses ground pipe bridge, and the pipes and poles should be aligned, with ten pipes and one head
.
(5) Before hauling the drill floor, skid mounted mud pump and accessories, they should be fixed firmly
.
Operation rules for derrick erection (1) align the center of the square drill plate on the drill floor with the wellhead, connect the workover rig base with the drill floor base, and then turn off the travel switch after the workover rig is in place
.
(6) Hang up the front and rear windproof guy ropes, use the derrick adjusting rod to adjust the inclination angle of the derrick, so that the hook center is aligned with the wellhead, the front and rear deviation is less than 5mm, and the left and right deviation is less than 20mm
.
(4) when hauling the duty room, no one is allowed to sit in the room and it is firmly fixed; when the duty room arrives at the new well site, it should be placed reasonably, 20 meters away from the wellhead, 50 meters away, and the sign plate should face the wellhead
.
The derrick shall be free of bending and deformation; the ladder and retainer shall be complete; the crown wheel and traveling wheel shall be timely greased to ensure flexible rotation
.
The lifting rope shall be inspected once in each well
.
After squeezing, the next process can be carried out only when the well has been pressed
.
If it can enter the station, it must enter the station when contacting with the oil production station
.
2
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Tighten the front and rear windproof guy ropes and the vehicle carrying guy ropes, connect the escape guy ropes of the racking board (the angle with the ground is 30o), and the work of erecting the derrick is finished
.
If the broken wire exceeds the standard, it must be replaced in time
.
After the repair and replacement, the shift leader and the driller shall confirm the repair and replacement at the same time, and then restore the hydraulic power
.
If problems are found in the pipes pulled out of the well, mark them to prevent the scrapped pipes from running into the well again
.
If overflow or pipe spray occurs during pipe lifting, the operation shall be stopped immediately
.
check the hydraulic system for oil leakage and abnormal high pressure, and then continue to lift the derrick
.
(4) The pipe and rod discharge area is surrounded by a small dike to control the landing range of crude oil
.
(2) Before dismantling the wellhead, contact the production team to dismantle the process affecting the operation, and the production team shall keep it by itself
.
(7) The derrick is not allowed to be set up in strong wind above level 6, heavy fog, thunder and rainstorm
.
(2) During well washing and killing, the outlet should be properly controlled to avoid leakage and formation pollution, and gas invasion of killing fluid
.
The pipe lifting operator shall stand on the pipe string and operate in the wind
.
After the inlet and outlet pipelines are connected, the pressure test should be carried out
.
Operating procedures for hydraulic tongs (1) hydraulic tongs and tongs shall be operated by 1-2 persons per shift, and other personnel are strictly prohibited to operate
.
3
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In case of poisoning, they should wear gas masks to the scene of the accident to rescue the poisoned person
.
(5) Antifouling cloth must be laid under the pipe and rod bridge to prevent the crude oil brought by the pipe and rod from polluting the well site
.
(5) When hydraulic tong and Tong are inspected, repaired, maintained and replaced, the power source must be completely cut off, which shall be confirmed by the driller and the shift leader
.
Don’t want to miss the wonderful content, remember to put the “oil man” on the top or star Mark “underground operation operation procedure operation procedures 1
.
The inlet and outlet pipelines should use steel hard pipelines
.
Relocation operation procedures (1) before relocation, the operation tools and materials should be placed reasonably to reduce the height of the removed objects as far as possible; the objects easy to slide should be bound firmly; the toolbox door should be closed firmly; the rope sleeve should be carefully checked for equal length and broken wire, and should not be used Brown rope, hemp rope and V-belt are used as rope sleeves for lifting tool boxes and other items; the crane driver shall obey the command of special personnel; when lifting items, brown rope shall be used for traction, and no one shall stand under the lifted items, no one shall stand above the lifted items, the hook and the traveling block; when dragging things in the well site, someone shall assist the operator to watch and command
.
If overflow or blowout potential is found in the well after the pump is stopped, the blowout shall not be released immediately
.
The pump can be stopped only when the proportion of inlet and outlet is the same
.
Remember not to release the gas quickly (fast release will induce blowout)
.
