Surgil ESIA Report - Volume III - EKN
Surgil ESIA Report - Volume III - EKN
Surgil ESIA Report - Volume III - EKN
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Management procedure of the drilling wastes<br />
(cuttings barns) recycling, generated during<br />
production wells drilling in <strong>Surgil</strong> field<br />
<br />
<br />
humidity – Method of the technological control of the municipal sewerage treatment facilities<br />
operation. М, 1997.<br />
oil products content - RD 118.3839485.11-92 "Method of oil products definition in natural<br />
and sewage waters by column chromatography with the weight end”.<br />
Variants of methods for cuttings neutralizations. Considering, that cuttings humidity high<br />
enough, the neutralization was spent without introduction of additional water by the following variants<br />
of methods:<br />
1st variant. There was loaded into tank 100 weight parts of drilling cuttings, 115 weight<br />
parts of quicklime and 50 weight parts of water and mixed up within 5-10 minutes up to<br />
formation of uniform mass. Received mix by humidity of 25-30% was unloaded in specially<br />
allotted place. Cuttings humidity after 24 hours made 20-25%. Cutting was in paste-like<br />
condition.<br />
2nd variant. There was loaded into tank 100 weight parts of drilling cuttings, 125 weight<br />
parts of alabaster and 50 weight parts of water and mixed up within 5-10 minutes up to formation<br />
of uniform mass. Received mix by humidity of 25-30% was unloaded in specially allotted<br />
away place. Cuttings humidity after 24 hours made 20-25%. Cutting was in paste-like<br />
condition.<br />
3rd variant. There was loaded into tank 100 weight parts of drilling cuttings, 115 weight<br />
parts of quicklime and 50 weight parts of water and mix up within 5-10 minutes up to formation<br />
of uniform mass. Then, there were added 30 weight parts of liquid glass and mixed<br />
up within 5-10 minutes. Received mix by humidity of 20-25% was unloaded in specially allotted<br />
place. Drilling cuttings hardening time is 24 hours. Cuttings humidity after hardening<br />
is 10%.<br />
4th variant. There was loaded into tank 100 weight parts of drilling cuttings, 125 weight<br />
parts of alabaster and 50 weight parts of water and mixed up within 5-10 minutes up to formation<br />
of uniform mass. Then, there were added 30 weight parts of liquid glass and mixed<br />
up within 5-10 minutes. Received mix by humidity of 20-25% was unloaded in specially allotted<br />
place. Drilling cuttings hardening time is 24 hours. Cuttings humidity after hardening<br />
is 10%.<br />
Technological parameters of process by 3 variant. Analysis of drilling cuttings neutralization<br />
conditions and availability of technology realization in the conditions of oil field (on drilling<br />
site, after drilling works termination and disassembly of the drilling equipment) by all four considered<br />
variants has shown that the most reasonable is the technology providing use of quicklime and<br />
liquid glass (3rd variant). Drilling cuttings parameters (per 100 weight parts of drilling cuttings):<br />
Drilling cuttings humidity - 65-67%.<br />
Quicklime dose - 115w.p.<br />
Water dose – 50w.p.<br />
Quicklime and drilling cuttings mixing time - 5-10 minutes<br />
Liquid glass dose – 30w.p.<br />
Time of mixing with liquid glass - 5-10 minutes<br />
Received mix humidity - 20-25%<br />
Hardening time - 24 hour.<br />
Humidity after hardening - 10 %.<br />
Thus, the characteristic of auxiliary materials is selected on the basis of the following standards:<br />
Quicklime according to GOST 9179-77 “Construction lime”.<br />
Liquid glass according to TS 6-18-68-75. Module not less than 2.45.<br />
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