![]() ![]() Offshore drilling services provided by the company include directional drilling, coiled tubing and re-entry, measurement-while-drilling, logging-while-drilling, drilling optimisation, casing/liner drilling systems, and remote drilling. Houston-based oilfield services company Baker Hughes recorded revenues of $22.9bn in 2018, a 5% increase over the previous year.īaker Hughes provides drilling, completion, and production services for oil, gas and alternative energy industries. It was also involved in the development of offshore fields such as Tupi, and Barracuda and Caratinga fields in Brazil. Halliburton provided drilling services on the Jasmine field in the North Sea, UK. Offshore drilling systems and services offered by Halliburton include directional and horizontal drilling, logging-while-drilling, measurement-while-drilling, underbalanced applications, multilateral systems, and rig site information systems. Halliburton provides products and services to the oil and gas industry throughout the reservoir lifecycle, from locating reserves to drilling and formation evaluation, well construction and completion, and production optimisation. Halliburton, an oilfield services provider based in the US and Dubai, earned $23.99bn in revenues in 2017, recording a 16.37% growth over its 2017 revenues of $20.62bn. It was also involved in the development of oilfields such as the Avouma Field in Gabon and the Bream Area Project, Central North Sea, Norway. Schlumberger provided drilling management services for the Epsilon Oilfield in the Aegean Sea, Greece. Its offshore drilling services include extended-reach, deepwater, and high-pressure, high-temperature wells, as well as multilateral and unconventional gas. Headquartered in Houston, Texas, Schlumberger provides products and services such as formation evaluation, directional drilling, well cementing and stimulation, well completion and productivity, as well as information management, consulting, IT infrastructure and software services. Schlumberger, the world’s biggest oilfield services company, earned a record full-year revenue of $32.81bn in 2018, a 7.8% increase from its 2017 revenues of $30.44bn. Please check your email to download the Whitepaper. For the typical tasks associated with many HDD projects, see Figure 2-6.Thank you. When determining HDD economic feasibility, all the tasks associated with the project should be considered in estimating the total costs of the HDD project. Pull-back duration is determined by dividing the length by the penetration rate to establish the actual pull-back time in minutes, then adding two minutes per drill pipe joint for retooling. It is dependent primarily on pipe diameter but can also be affected by the quality of the reamed hole. The pull-back penetration rate is the speed at which the pipe is being pulled into the reamed hole. This gives the duration for a single prereaming pass, which is multiplied by the number of passes to give a total duration for the prereaming operation. The prereaming duration can be determined by dividing the length of the HDD crossing by the penetration rate to establish the actual reaming time, then adding two minutes per drill pipe joint for retooling. HDD crossings in soft or hard rock normally require at least two additional passes. ![]() For product pipe diameters greater than FIGURE 2-6 Tasks Associated With HDD ProjectsĤ2 inches three prereaming passes can be anticipated. For product pipe diameters larger than 30 inches a second prereaming pass should be assumed. ![]() ![]() When estimating the HDD economics, it is typically assumed that all HDD projects will be rereamed at least once. The number of required prereaming passes depends on the subsurface conditions and the product pipe diameter. The prereaming penetration rate also depends on the soil conditions and the diameter of the reamer. The pilot-hole duration is determined by dividing the production rate into the HDD length to determine total hours required for the pilothole production. It includes the time for surveying and adding pipe and is dependent upon the subsurface conditions. The pilot-hole production rate is based on productivity rather than penetration rate. Table 2-5 provides production rates for various pipe sizes and soil conditions3. The typical production rates provided in Table 2-2 are dependent on product pipe size and soil conditions. This markup covers the contractor's overhead, contingencies, and profit. Usually non-daily costs are added as a markup to the contractor's direct costs. Pilot Hole Production Rate ft/hr for Pipe Diameter 30-inches and Greater ![]()
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