Directional drilling project coordinate system has been specified, the drilling mud shakes in actual work required in directional drilling and pipeline plan sectional plan should be consistent coordinate system to facilitate the post-docking and line drawings and construction materials butt. Such as the South East Gas Transmission long extension cord five directional drilling and pipeline survey coordinates inconsistent, to varying degrees obstacle late work.
Supplementary survey instruments commonly used test drilling or drilling pilot holes in the actual work should attach great importance to the collection of geological data, drill cuttings samples were collected continuously and numbered, and comparative analysis of geological data, programs and measures for the development of technology to provide technical in accordance with.
Sealing should be completed after water drilling of the HDD. The linear motion mud shakes should be applied during the HDD drilling. According to the relevant provisions of the drilling procedure, commonly used cement sealing bedrock drilling, but also for the completion of coring after sealing quality inspections of sealing cement core cellular conditions or breakage, directional drilling to prevent the construction process plasma leakage or string plasma phenomena occur along the geological drilling.
All kinds of mud shakers such as the BW75P, BW852P, BW703P, BWZS3P and BWZS4P act. are widely used in all kinds of the drilling mud industry. Reset crossing point in the vicinity of at least two phases should be arranged to pass, as the control point for the loss through the pile after. In practical work should distinguish between small and medium-sized crossing through and through, as the conditions of the two sides, medium and large across the pass, as well as by the conditions, requirements into the excavated points on both sides or ends of the general requirements furnished three control points pile to each other schools nuclear and pile up points after missing the pile or reset. If you pass, as the conditions are bad, the construction unit should be in the design of the unit to pay pile design units within seven working days written proposal to increase the requirements to apply for additional control pile.
