Zhou, Chaoguang (Petroleum Geo- Services) | Martínez, Jaime Ramos (Petroleum Geo- Services) | Lin, Sonny (Petroleum Geo- Services) | Jiao, Junru (Petroleum Geo- Services) | Dahl, Sverre Brandsberg (Petroleum Geo- Services)
Time-lapse electrical resistivity data has been recognized as a source of information for estimating reservoir flow properties in environmental applications. However, transient resistivity data have not been fully utilized in such estimations due to 1) the general lack of an adequate petrophysical transform, and 2) the limited resolution of electrical resistivity tomograms. In this paper we discuss the current limitations in using time-lapse resistivity data to constrain inverse estimates of hydraulic conductivity and present a method that addresses each limitation by leveraging the strong correlation between changes in fluid and bulk conductivity. We demonstrate with a synthetic example the rich amount of information provided by resistivity data and show how that information can be extracted in a meaningful and unbiased manner to estimate reservoir flow properties using a data domain correlation approach.
Modern hydrogeology is increasingly depending numerical modeling to simulate impacts of water resource projects tens or hundreds of years into the future. The validity of such numerical models is highly dependent on accurate distribution of key hydrogeological parameters. A combination of 3D seismic reflection and Vertical Seismic Profiling (VSP) offers the potential to create detailed, accurate, hydrostratigraphic frameworks within which physical, chemical and biological properties can be distributed. We provide the outline and outcomes from a systematic research program designed to develop and optimize 3D seismic reflection and VSP techniques tailored for hydrogeology. The test site is located at the Beenyup Waste Water Treatment Plant near a major freeway, where a long term high volume purified waste water injection trial will commence in 2009.
Lo´pez, Jaime J. Ri´os (Pemex PEP Marina Noreste) | Vidal, Madain Moreno (Pemex PEP Marina Noreste) | Gonza´lez, Manuel (G&W Systems Corp.) | Rusic, Alberto (G&W Systems Corp.) | Srinivasan, Sanjay (University of Texas) | Sen, Mrinal (University of Texas) | Sil, Samik (University of Texas)
Integrated service companies have recently developed multi-component induction wireline and LWD resistivity logging tools. The new wireline induction logging tools are 3DEX from Baker Hughes and Rt Scanner from Schlumberger. The directional LWD resistivity tools include azimuthal propagation resistivity (APR) from Baker Hughes, azimuthal deep resistivity (ADR) by Halliburton, and PeriScope15 and PeriScope100 from Schlumberger. These new tools have multiple or 3-component transmitters and receivers, and thus can provide information about directionality and anisotropy. This information has led to some important applications. The 3DEX and Rt Scanner have been used to detect resistivity anisotropy of the formation, which allows a better quantification of hydrocarbon-in-place and hydrocarbon recovery.