But incomplete or sparse information contributes to high levels of risk for oil exploration and development.
而信息的稀少或不完善，又导致了油田勘探和开发过程的高风险。
At the stage of exploration and development, the working procedures of drilling operation are various, operation is complicated, and the characters are high investment, large-scale, and high risk.
在油田开发与勘探中，钻井作业工序繁多，操作复杂，具有高投入、大规模、高风险的特点。
It concluded that there was a risk to spread petrochemical business to oil and gas exploration and only development of fine petrochemicals could actually increase economic benefits.
认为向石油勘探开发上扩展风险较大，向石化下游延伸，大力发展精细化工是提高经济效益的好途径。
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