gravel packing

基本解釋

Productivity Ratio(PR) is firstly put forward to evaluate the effect of gravel-packing sand control measure on gas well productivity.
提出了以防砂產(chǎn)能比作為防砂措施對氣井產(chǎn)能造成影響的評價指標。
Packing can be made from wide range of commercial and home made materials-steel, wool, wood chips, coke, gravel etc. Gas is passed through bottom and removed at top.
包裝可從商業(yè)和自家做的各種材料，鋼材，羊毛，木屑，焦炭，礫石等氣體是通過底部和頂部刪除。
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Incipient motion of solid grain in solid-liquid two\phase flow is often concerned in many petroleum technologies, such as horizontal drilling, gravel-packing and sand washing.
水平井鉆井、礫石充填及沖砂等作業(yè)都涉及到固液兩相流動的固體顆粒起動問題。