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| Drilling Crew Power Rig |
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| Drag Bit 37/8 ''3Wing |
PROCEDURE SEISMIC DRILLING
Method
1. Driller studies the survey map, line program, and sketch line the area
2. Driller, Shooter and Crew coordinator conduct field orientation to ensure position of hole program, access, source of water, and potential prolem operation.
3. On the no watre sources area, driller prepare temporary water tank and make a planning use water tank and water relay. Driller shall get permit from owner if use water well
4. Driller ensure that quantity and quality of all equipment complate for one unit, influding fuel and addatives will used.
5. Driller ensure that number of crew is complate. None of crew have number exactly including their own support like water relay and preloading. All worker must use work and personal safety equipment.
6. Hardhats and work boots must be when working at all times
7. Driller ensure that SP will drilled is correct as program. All drilling station markers (shotpoint) are painted red
8. Any parts of lines that is missing more than 3point makers in line must be resurveyed you must call base camp and advise them to send the survey crew.
9. Driller performs distance from SP position to nearest civil construction, comply with safety distance and considered surface condition and subsurface outcrop.if not safety, Driller will make offset or compensation hole.
10. All compensated or offset holes must be surveyed call base camp if required and the survey crew will be send to your location.
11. Shotpoint markers must not be moved offset the drill location away from the markers do not move the marker.
12. The shotholes must be drilled within a 2 mater radius of the station marker (shotpoint).
13. Try to walk along the seismic whenever possible.Don't destroy the levy banks around the rice fields.Walk along the seismic line.
14. All holes will be drilled using the two hole system. One big slush pit hole and one small hole for the cuttings.
15. Drilling technic must comply with soil/rock formation. Drilling perform with correct technic.including using drill bit, addative (polymer,mud, etc), or washing. Change the drill bit or any equipment if not comply it.
16. See drill cutting carefully. Drill log reported every 5(five) m depth.
17. All shot holes must be drilled as per contract depth.
18. Any adjacent shot hole a stuck charge one of the shot holes must be re-drilled. Offset 7meters from the first hole and drill the second hole mark the holes A and hole B.
19. All shot holes that can not be drilled to the contract depth you must have approval from the QC supervisor before any such hole is loaded.
20. Withdraw pipe must be conducted with correct technic and comply with rock formation.
21. Any oil and gas shows must be reported immediately by radio. Move your men well away from the hole, move up wind. Do not go back to the hole until the drilling supervisor arrived from base camp with the HSE people.
22. Driller ensure that preloading crew ir ready before withdrawing pipe.
23. All slush pits must be back filled after the drilling is completed at the shot point.
24. When the drilling crew have completed the shothole, they must all move away from the shothole taking with them all hot equipment. Which includes power rig, mud pump and fuel containers, other equipment can remain, however it must be moved away from the hole giving the preloading crew clear access.
DETAIL OF DRILLING PROBLEM
In summary, I tell about my experiences while working on drilling, using the tools work differently, but we found almost the same problem,if you find a ballet hole that stuck when check by loading the pole after drilled, such a 20 meters into it, here are some alternative solutions that we do :
a. If the hole stuck when loading pole checking, the hole has to be washout.
b. If washing out the hole is not successful. The SP must be compensated front as same direction as crew moving along the line referred to earlier notice about compensation that make by client.
c. If there is no possibilities to compensated, the SP has to be offset perpendicular (right or left depends on field situation) to line referred to earlier notice about offset rule that make by client (starting 7 -50 meters)
d. What if we fail again,we find we use cassing HQ or NQ, HQ usually we use when we find coral/gravel at a depth of 3 -5 meter,what if to find the coral/gravel all the holes are very difficult to use this cassing.
e. What if we find fail again, the las alternative that we do,is drill hole pattren, depending on the approval of the client company.
TERRAIN AND LITHOLOGY
Terrain and lithology effect on a alot and a little production on a drilling unit, usually the cause of the small production, the problems is,hard water,lithology is difficult, the equipment is not good, difficult terrain to go, and if the settlement is usually the problem permit.
CREW WATER RELAY
Crew water relay and important rule in the drilling unit, the setting is very influential on alot of water and a little production in drilling units, is the key to the success of drilling crew relay water,and determine the number of production and drilling the production at least.
