The phrase "borehole about" can be grammatically correct and usable in written English.
It is often used in the context of geology, engineering, or construction to refer to a specific type of borehole or drilling process. Example: The geologist drilled a borehole about 100 feet deep to collect samples of the soil and rock layers for analysis.
The Holocene depositional history of southeastern Po Plain on time scales of 103 yr is reconstructed, based upon integrated sedimentological and micropalaeontological analyses of nine continuously-cored boreholes, about 40 m deep.
The productivity of the Lucius and Bois-châté boreholes (about 36 m3 h–1) thereby is in the lower zone of productivity of wells in the Buntsandstein (30 to 150 m3 h–150
We applied the SW H/V of cap-layered medium to identify the underground velocity structures between surface and bottom of boreholes (about several hundred meters in depth) at some KiK-net stations where the FW H/Vs did not match with the observed H/Vs.
By coincidence, modern groundwater geophysical survey in Nzuguni found the best borehole location only about 1.5 m from a termites' mound (Fig. 3).
A borehole is about the safest option.
He said the nearest borehole was about two kilometres away but had broken down sometime back.
Our results reveal dramatic environmental changes at ~ 5 Ma, suggesting that an extremely dry climate has prevailed since the beginning of the Pliocene, which is consistent with findings from a high-resolution borehole record about 670 km to the east in the same basin.
When the working face passes the borehole by about 150 200 m, the extent of connection between the borehole and gob improves and a lot of low concentration gas is extracted from the gob, correspondingly lessening the quantity of pressure-relieved gas.
Only boreholes with high flow rate (>8 l/s) (about 68 boreholes) were used in the rest of the analysis and randomly divided into two sets using MINITAB 16 software.
A pilot hole, the KTB-VB, went to about 4 km deep, and a subsequent superdeep main hole, the KTB-HB, went to about 9.1 km deep; the two boreholes were about 200 m apart (Emmermann and Lauterjung 1997).
