| 释义 |
downhole, a. and adv. Chiefly Oil Industry.
[f. down prep. + hole n.]
A. adj. (Stressed ˈdownhole.) Used, occurring, or performed in a hole or well drilled in the earth's surface.
1954World Oil Mar. 121/1 This downhole instrument offers something new. 1967Paper Geol. Survey Canada LXVI. xliv. 4 The seismic equipment consisted of a down-hole geophone string. 1975Daily Tel. 29 Sept. 17/3 On some of the newer units, with computers to determine downhole conditions, electronic and electrical engineers are required. 1976Offshore Engineer July 20/2 Downhole work will be carried out using wireline tools. 1986Ibid. Sept. 34 (Advt.), Electric feed thru penetrators..packer and wellhead penetrators and cable connectors used to conduct power for downhole applications.
B. adv. (Stressed downˈhole.) Down or in a drilled hole or well.
1958Oil & Gas Jrnl. 17 Nov. 174/2 The efficiency with which hydraulic power is transmitted downhole is equal to the ratio of the pressure drop across the downhole device. 1975Daily Tel. 29 Sept. 17/3 Both schools have well control simulators, which can be programmed to simulate varying pressures downhole. 1977Offshore Engineer May 42/1 The remaining well was shut down due to mechanical problems downhole. 1988New Scientist 14 Apr. 36/2 At present, oil companies have no tools that are used ‘down-hole’ to guide the drilling of a relief borehole. |