shearing of phpa muds cutting down on problems – drilling fluids

shearing of phpa muds cutting down on problems – drilling fluids
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  • How has PHPA mud changed the drilling process?
  • In wells drilled with PHPA mud, the number of bits was reduced from seven to two, rotating hours were reduced from 128 to 58, drilling progress was increased from 254 to 499 ftlD [77 to 152 mId], and total days were reduced from 12 to 6.
  • Does adding PHPA to water based mud affect shale dispersion?
  • According to the results obtained, it was observed that the addition of PHPA to the formulation of the water-based mud affects relatively on the shale dispersion, where the amount of dispersion cuttings has decreased depending on the PHPA concentration and on the presence of the reactive clay in the different cutting samples.
  • What is the technology of PHPA mud systems?
  • Although more is known from field applications about how practices, although more is known from field applications about how the products work and the systems behave, the technology of PHPA mud systems is still developing. Drilling of oil and gas wells always results in the incorporation of native clays into the mud system.
  • Can you drill cement with PHPA mud?
  • Do not drill cement with PHPA muds, unless the system will be replaced after drilling out, because PHPA muds are sensitive to high pH, especially in the presence of high calcium levels. If drilling cement with a PHPA system is unavoidable, pretreat the system with 0.251bmlbbl [0.7 kg/m3] sodium bicarbonate.