The selectivity solid phase control technology
Application selectivity solid phase control technology, the returned drilling fluid from well mouth through high efficiency screened divided into big grain wet drilling cuttings and sieving fluid, which separated the three class solid phase through classification filter separator, from thick to fine successively is thick drilling cuttings(74~35 µm)aggravate solid phase(35~15 µm)and fine drilling cuttings (2~15 µm), after the aggravate solid phase separated by separator return into drilling fluid system, the coarse and fine drilling cuttings excretion. It can eliminate more harmful solid phase, especially the diameter particles lower than aggravate solid phase harmful solid particles, can improve drilling machine speed, decrease drilling fluid viscosity and dilution water and decrease drilling fluid volume.
Drilling cuttings in –line treatment technology:
We only value drilling fluid treatment past, but lose sight of the treat to drilling cuttings, drilling cuttings directly discharge into mud pit. Every well all need a mud pit, the area should exceed 500m2. According to treat the wed drilling cutting in-line, can divided into filtrate and dry drilling cuttings, filter returned to drilling fluid system, the dry drilling cuttings are placed in storage and transportation box, centralized processing and recycling used, according to drilling cuttings in-line treatment technology can make drilling cuttings and waste drilling fluid can’t drop on the ground in drilling field, can fully recover available drilling fluid and don’t use mud pit, it has the obvious e economic benefic and huge social benefit.
Drilling fluid recycle technology
Usually the waste drilling fluid is 100-300m3 after a well drilled successfully. According to the homologous stratum characteristics and drilling fluid type to separate the waste, to the available drilling fluid proceed fully recycle use, can decrease drilling fluid gross, decrease emission load, the benefit is very obvious. Of course, the drilling fluid recycle need a set of processing measure, main including the improvement of drilling fluid performance, classification storage and reliable application.