Process Evaluation On Technology Of Using Impulse Heat Lustrate Removing Oil From Offshore Drilling Cuttings And Study On Impulse Pipe Syringe

Drilling cuttings was rock powder that was destroyed during the process of artesian well drilling and lifted to ground from underground across drilling mud circulation. Offshore drilling cuttings including oil have a great effect on ocean environment. Accordingly, treatment of offshore drilling cuttings was regarded as an international difficult problem that need to be solved as quick as possible.The author advanced technology of using impulse heat lustrate removing oil from offshore drilling cuttings according to particularity of treatment of offshore drilling cuttings. The scheme is first abstersion drilling cuttings use solvent, then drilling mud and solvent was separated by distillation. Drilling mud recycled into artesian well process and solvent circulated. Solvent included in drilling cuttings was lustrated by calefaction so that drilling cuttings can be directly threw into sea. Solvent gained by calefaction was circulated. The technology can be used on flat roof of offshore artesian well and drilling cuttings can be disposed according with environmental protection standard. The technology had prominent economy benefit.Simulation and evaluation of multi-feasible scheme were done by HYSYS software. Detailed data were obtained such as material stream, temperature, pressure, etc. Based on technics realizable, energy consume, technology performance, the author confirmed the most optimize technics flow. Energy consume of the most optimize technics flow is 280kw, solvent consume is 12kg/h.According with flow characteristic, the author designed a new type mixture abstersion equipment, which is called impulse pipe syringe. The experiment and simulation of flow field of impulse pipe syringe were carried out. The results showed that configuration design of impulse pipe syringe made turbulence intensity stronger and made residual time of particle longer, so mixture abstersion effect was better.The experiment tests were made on separation of distillation. The experiment results of distillation showed that mixture could be separated easily. The Chromatogram test results of mixture of drilling mud and solvent that was disposed showed that drilling mud components have not almost changed and can be recycled. Solvent which obtained through distillation can be circulated.The analyzed results of North china sea branch of the state oceanic administration indicated that the amount of oil in drilling cutting of the experiment sample using technology of using impulse heat lustrate remove oil from offshore drilling cuttings could fall to≤0.12% and biological toxicity detection according with release criterion of government and region. At present the lowest amount of oil in drilling cuttings that can be released into sea at international laws is 1%.