A computer program is presented that calculates thicknesses and resistivities of a layered earth from three different variations of Schlumberger arrangements: (1) The usual Schlumberger method with 4 electrodes at the surface. (2) Lake bottom arrangement: 4 electrodes at the bottom of waters like lakes, rivers or the sea. (3) Two potential electrodes at the same depth in the ground and two elec...

October 1992 nPerils of sand production. At worst, sand production threatens a well. Voids can form behind the pipe, causing formation subsidence and casing collapse. The well may also fill with sand and cease flowing. Or the surface equipment may be catastrophically damaged by erosion or plugging. For help in preparation of this article, thanks to: Bob Elder, Chevron UK Ltd., London, England; ...

At Schlumberger RPS, the application of the Goal/Question/Metric approach (GQM) and the Quality Improvement Paradigm (QIP) resulted in an enhanced ‘model-based GQM’. It customizes measurement to the organization and supports in the reuse of experience, by applying and maintaining reusable reference models. This ‘model-based GQM’ is a more formal method for the application of software measuremen...

For help in preparation of this article, thanks to Austin Boyd, Gabriela Leu and Romain Prioul, Boston; Ray Kennedy, Edmonton; Patrice Ligneul, Dhahran, Saudi Arabia; John McCullagh, Sugar Land, Texas, USA; Guillemette Picard, Clamart, France; Raghu Ramamoorthy, Abu Dhabi, UAE; and Alan Sibbit, Moscow. Thanks also to the participants of the May 2007 Schlumberger Wettability Workshop, Bahrain. E...

SCHLUMBERGER is a large, multinational corporation concerned primarily with the measurement, collection, and interpretation of data. For the past fifty years, most of its activities have been related to hydrocarbon exploration. The efficient location and production of hydrocarbons from an underground formation requires a great deal of knowledge about the formation, ranging in scale from the siz...

Abstract Drought is one of the problems faced by people Lembor Village, Lamongan Regency, this problem will be slightly resolved if area has reserves groundwater sources. Therefore, study aims to determine existence potential sources around Village. The method used geoelectrical resistivity schlumberger configuration. Data acquisition was carried out for 10 measuring points Vertical Electrical ...

Kedungpedaringan is a village that included in the Kepanjen sub-district, Malang Regency, with area of about 2 km2 . The lack groundwater availability can be used for residents around this and development tourist villages encourages research. Investigation aquifers containing has been carried out using geoelectric method Schlumberger configuration. Three datum points were acquired to West Brant...

For help in preparation of this article, thanks to Dylan Davies, Schlumberger Cambridge Research, Ahmad Madjidi, Schlumberger GeoQuest, Abu Dhabi, UAE; Nabil Mazzawi, Schlumberger Wireline & Testing, Tripoli, Libya; Perry Nice, Statoil, Stavanger, Norway; Barry Nicholson, Schlumberger Wireline & Testing, Jakarta, Indonesia; Daniel Roche, Elf, Bergen, Norway; Philippe Rutman and Derek Stark, Sch...