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1. Unidirectional pressure sealant for drilling fluid
1) . Characteristics:
It is a kind of greyish yellow powder made of many kinds of natural fiber, filling particles and additives at the appropriate proportion, if you add this products when drilling, with the effect of uniaxial pressure, it has good efficacity of forming sealing, it can be used expediently, good compatibility, and it doesn't impact the capability of the mud
2) . Application:
Unidirectional pressure sealant for drilling fluid is suitable for all conditions of micro-fracture and stratum leakage filtrarion. This products have good compatibility, can be used with all drilling fluid and competition fluid of different system and different density, sealing the leakage effectively, and it can improve the quality of the mud-cake, reduce water loss.
Recommendatory dosage: 4%
3) . Packing:
Weave bag outside and plastic bag inside. 25kg/bag or as client require
Products should be placed in cool dry place, not exposed in the sun, in order to prevent damage of packing and moisture
2. Plugging agent
Composite plugging agent (plugging while drilling) is made from nature polymer based composite, it can be used well in drilling. Because it swells when meets with water, so it has the capacity of plugging, it also has strong adhesive ability, compared with traditional plugging agent, it can be used more expediently, it can combined with all mud system to plug the thief zone and protect low-pressure production zone (oil, nature gas, water, etc. ) .
Appearance: off white powder
Water content: <14%
PH: 7-9
It can plug small openings and micro-fractures quickly, used well.
It can quickly form a no penetrative shielding zone which has certain intensity to stop the liquid and solid phase in the treatment fluid from invading the accumulation layer, protect the accumulation from damage, then we also can get rid of the shielding zone by anti-perforation.
It can observably reduce the filtration of the mud, and no influence for the rheology behavior of the mud, also have excellent heat resistance.
It cant be affected by electrolyte pollution, innocuous and harmless.
Use-method:
Prevention of leakage: 1-2%
Formation sealing of small openings and micro-fracture in sand bed and protection of accumulation: 2-4%
Formation sealing of serious thief zone: 4-6%
Packing:
Weave bag outside and plastic bag inside. 25kg/bag allowable error +1%
Products should be placed in cool dry place, not exposed in the sun, in order to prevent damage of packing and moisture