... Abstract Logging-while-drilling (LWD) ultra-deep resistivity technology can explore the reservoir on a similar scale to seismic, so interpreted resistivity models can be combined with seismic sections to enable oil field operators to delineate pay zones better, improve reservoir understanding...

... trail results exceeded pre-drill expectations, clearly identifying resistivity boundaries, consistent with offset logs. While drilling, the real-time ultra-deep EM tool provided high resolution mapping for precise geosteering within thin layers and mapped a varying water slumping contact 80 ft TVD above...

..., this process is difficult to do manually. To simplify this, inversion algorithms are deployed to represent EM logging while drilling (LWD) measurements as models reflecting the geology. Inversion results are not a direct measurement, therefore confidence in the results is critical. Real-time well placement...

... conveyed with the drilling bottom hole assembly as part of the LWD (logging while drilling) formation evaluation suite. While there are clear advantages of directly probing the formation fluids soon after drilling, there are also more challenges associated with the dynamic drilling environment. The FMWD...

...Introduction Abstract Production logging tools (PLTs) and formation testing, even in logging while drilling (LWD) conditions during underbalanced drilling, are key technologies for assessing the productivity potential of a gas well and therefore to maximize recovery. Gas bubble detection...

..., and permeability is required to identify the productive fractures and optimize production. In this paper, we discuss the first application of the latest Logging-While Drilling (LWD) high-resolution laterolog resistivity image in combination with LWD multi-pole sonic to provide comprehensive fracture...

... the applications envelope against specific objectives. A new logging-while-drilling (LWD) technology of pitch-catch (PC) ultrasonic is under development, that can also provide borehole images of compressional and shear slowness in anisotropic and / or heterogenous formations both in water and oil-based-mud...

... oil & gas formation dip inversion logging while drilling well 3 plane configuration symposium directional resistivity lwd resistivity apparent resistivity lwd well 1 deep directional resistivity lwd deep directional resistivity lwd measurement anisotropy Introduction...

... upstream oil & gas drilling data acquisition logging while drilling wellbore seismic real time system production monitoring reservoir surveillance borehole imaging dynamic resistivity image interpretation case study information th track sand interval deposit evaluation shaly sand...

... local minimum in the inversion. Abstract Interpretation of sonic data acquired by logging-while-drilling tool or wireline tool in cased holes is complicated by the presence of drill pipe or casing because those steel pipes can act as a strong waveguide. Traditional solutions, which rely on using...

... and ensure well integrity. vertical seismic profile reservoir characterization production monitoring drilling data acquisition real time system drilling measurement production control well control well logging hpht drilling operation log analysis pore pressure logging while drilling south...

... resistivity logging-while-drilling technology and its measurement processing are instrumental in strategic well placement, landing, geosteering, and reservoir understanding. However, since the measurements are truly at the reservoir scale, reservoir complexities limit the applicability of 1D and sometimes...

... Abstract This paper presents a novel borehole image compression algorithm for real-time (RT) logging while drilling (LWD). The compression scheme is designed to optimize the critical information required for RT decision making at low telemetry bandwidths. In the proposed algorithm we estimate...

... Abstract Obtaining high-resolution borehole images in oil-based mud (OBM) from logging-while-drilling (LWD) tools has been made possible through the recent development of ultrasonic imaging technologies. High-resolution acoustic impedance images enable reservoir evaluation through...

... Abstract Ultradeep resistivity logging-while-drilling (LWD) is now a routine service for real-time well landing,geosteering, and reservoir and fluid contact evaluation. Progressing beyond layered earth inversions to three-dimensional (3D) inversions helps improve real-time decisions to deliver...

... of the methods considered is validated by guided inversion for typical job stages (pre-well, real-time, post-well) and applications (landing, reservoir navigation, mapping). Inversion results for extra-deep logging-while-drilling (LWD) resistivity tools are usually shown as a multi-layer resistivity...

... to multiple data driven answer products from downhole tools. Extra deep azimuthal resistivity logging while drilling (LWD) tools can detect boundaries up to 30 m away from the wellbore given optimal resistivity conditions. Combined with multicomponent inversion modelling (MCWD), the data acquired are used...

.... drilling measurement logging while drilling Upstream Oil & Gas sensitivity drilling data acquisition cement and bond evaluation attenuation amplitude amplitude approach well logging casing and cementing representation bond index attenuation rate LWD tool propagation wireline tool...

... shows that the ZX curves are most sensitive to the changes of bed azimuth. This is the reason why we call ZX measurements directional curves and use them for geosteering. Abstract Azimuthal resistivity logging-while-drilling (LWD) tools are widely used in geosteering because of their azimuthal...

... electromagnetic logging-while-drilling measurements brings opportunities in imaging complex formations around the wellbore. In this context, basing the inversions on an assumption of a layered medium is not always sufficient to decouple geometrical effects in complex formation scenarios. Rather than attempting...