Resistivity Logging

Discover a well’s most productive zones with resistivity logging services

Recording what’s below the subsurface can help you identify where hydrocarbons are located in your reservoir. Resistivity logging-while-drilling (LWD) tools gather data to determine which formations are filled with water (good conductors of electricity) and those filled with hydrocarbons (poor conductors of electricity). The combination of resistivity logs and porosity measurements aids in estimating water or oil saturation, and evaluating the producibilty of the formation.

Sperry Drilling LWD resistivity tools offer different types of resistivity sensors to accurately detect variations in resistivity around the borehole, from a few inches (centimeters) to hundreds of feet (meters) away. This allows you to safely and confidently navigate and geosteer through complex geologic structures, while maximizing exposure of the well to the most productive zones.

AFR™ Azimuthal Focused Resistivity Sensor
Delivers high-resolution resistivity images for identifying dip, fractures, and borehole breakout. It also provides omni-directional, laterolog-type resistivity data, electrical images of the formation, and at-bit resistivity (ABR) measurements.
EarthStar™ Ultra-Deep Resistivity Service
Innovative, disruptive technology that maps reservoir and fluid boundaries more than 200 feet (60 meters) from the wellbore – over twice the depth of investigation of current industry offerings.
ADR™ Azimuthal Deep Resistivity Sensor
Provides deep reading resistivity up to 18 feet (5.5 meters) into the formation – over 2,000 unique measurements for both precise wellbore placement and more accurate petrophysical analysis
EWR®-PHASE 4 Resistivity Sensor
Delivers excellent vertical resolution in low-resistivity, thinly-bedded formations in boreholes from 3-3/4 to 30 inches.
M5™ Integrated LWD Service
Innovative, disruptive technology that maps reservoir and fluid boundaries more than 200 feet (60 meters) from the wellbore – over twice the depth of investigation of current industry offerings.
Quasar Trio™ M/LWD Triple-Combo Service
Retrieve LWD triple-combo FE data of resistivity, density, and porosity in 200°C environments

Resistivity Logging

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Summary Summary Papua New Guinea: AFR™ Sensor Delivers High-Resolution Images in Geologically Complex Well Sign in required
Acquire high-resolution structural and stratigraphic borehole images in a complex geological environment.
Summary Summary Canada: Accurate Geosteering Helps to Precisely Position a Wellbore in a Cyclic Steam Application for Optimized Oil Recovery Sign in required
Geosteer a horizontal well for precise wellbore placement in the heavy oil reservoir, 2 meters (6.6 feet) above a lower shale boundary.
Summary Summary Ecuador: A Real-Time, Collaborative Environment to “Model, Measure and Optimize" Saves Petroamazonas Time and Doubles Production Sign in required
Petroamazonas wanted to position a well in the cleanest, most permeable portion of the reservoir and maximize reservoir contact by remaining in the “sweet spot” of the targeted sands.
Summary Summary Thailand: Optimized Geosteering Solution Delivers Maximum Reservoir Exposure in Geometrically-Complicated Environment Sign in required
Precisely place two horizontal well bores without exiting the reservoir.
Summary Summary Kazakhstan: Sperry Drilling Services Performs First Operation with Slimhole Geo-Pilot® Rotary Steerable System and ADR™ Sensor Sign in required
Karachaganak Petroleum Operating B. V. (KPO) needed to drill a well located in the Karachaganak field, Kazakhstan, from a land rig into a hard limestone formation.
Summary Summary Venezuela: Petrocedeño, Venezuela, Uses InSite ADR™ Sensor and StrataSteer® 3D Service for Optimal Wellbore Placement Sign in required
Petrocedeño was able to steer the wellpath into the best reservoir target, reducing geological uncertainties, optimizing drilling operations and delivering an improvement in net pay.
Summary Summary Russia: Slimhole Resistivity Sensor Helps Invigorate Mature Field Sign in required
TNK-BP in Russia was looking to ncrease production from its mature Western Siberia oil fields. There was a pressing need for logging-while-drilling (LWD) resistivity tools that could help navigate to bypassed pockets of oil, however with 146-mm (5-3/4-inch) production casing already installed in most wells, a special slimhole LWD resistivity sensor was required.
Summary Summary Gulf of Mexico: Sperry M/LWD Tools Perform in Environment Exceeding 30,000 psi Sign in required
Provide M/LWD tools capable of operating in the estimated 30,000 psi or higher pressure environment, drilling a 10,000 foot (3,048 meter) or longer salt section.
Summary Summary Canada, Alberta: Real-Time Geosteering Delivers Optimal Wellbore Placement in Thin Coal Reservoir Sign in required
An operator drilling a coalbed methane well in the Swan Hills area of Alberta, Canada needed to stay at the bottom of a thin reservoir to enable maximum production of methane gas. The reservoir was only 1.8 meters (6 feet) thick, and it was very important to place the well as low in the reservoir as possible without exiting.
Summary Summary Papua New Guinea: AFR™ Sensor Delivers High-Resolution Images in Geologically Complex Well Sign in required
Acquire high-resolution structural and stratigraphic borehole images in a complex geological environment.
Summary Summary Oman: StrataSteer® 3D Geosteering Service with the ADR™ Sensor Help Deliver Five Times More Production Sign in required
Drill a 900 meter (2,953 ft) lateral, maintaining well trajectory within the 3-5 meter (10-16 ft) thick complex reservoir.
Summary Summary West Africa: InSite AFR™ Sensor Delivers High-Resolution Images for Reservoir Fracture Characterization Sign in required
Acquire high-resolution borehole images while drilling the wells to characterize the fractures and rock texture in order to predict injector performance.
Summary Summary Middle East: Remote Operating Centers Successfully Optimize Geosteering Efforts to Maximize Exposure in Extremely Thin Clastic Reservoir Sign in required
An operator drilling through complex shale and sand formations required accurate real-time information to navigate to a sandstone target zone of a mere three feet true vertical depth, sandwiched between two shale zones.
Summary Summary Canada: Accurate Geosteering Helps to Precisely Position a Wellbore in a Cyclic Steam Application for Optimized Oil Recovery Sign in required
Geosteer a horizontal well for precise wellbore placement in the heavy oil reservoir, 2 meters (6.6 feet) above a lower shale boundary.
Summary Summary Norway: Hydro Uses ADR Sensor for Optimal Well Placement Sign in required
InSite ADR® Sensor case history, Hydro, North Sea
Summary Summary Southern USA: AFR™ Sensor Delivers High-Resolution Imaging in Tight Gas Field Sign in required
The operator of a tight gas field sought to increase their reservoir understanding. However, wireline imaging tools were getting stuck in deviated wells in the heavily fractured formation.
Summary Summary Abu Dhabi: EWR-PHASE 4™ Sensor Saves Approximately $268,000 by Indicating Rock Quality Sign in required
The operator relogged the section with the EWR-PHASE 4 sensor in just nine hours because of its fast sampling rate, instead of the 24 hours it would have taken with the competitor's system.
Summary Summary Malaysia: Sperry Drilling Geosteering Solution Helps Reduce Costs and Increase Production with Precise Wellbore Placement Sign in required
The customer challenged Sperry Drilling services to provide a cost-effective solution that would facilitate geosteering in this difficult sandstone formation.
Summary Summary Malaysia: Optimized Drilling Solution Key in Guiding Record-Length Horizontal Hole to Difficult Target Sign in required
The primary challenge in this well was drilling a transition zone while remaining eight meters (26 feet) above the oil/water contact (OWC) and five meters (16.5 feet) below OWC.
Summary Summary Middle East: Middle Eastern Oil Company Saves $450,000 Field Testing the InSite AFR™ Sensor Sign in required
By eliminating unnecessary runs, use of the InSite AFR sensor in three horizontal wells saved about nine days of rig time worth approximately $450,000. Also the sensor clearly revealed numerous geologic features.
Summary Summary Gulf of Mexico: Geosteering Solution Successfully Lands Wellbore in Difficult Section, Saving Operator USD 600,000 Sign in required
In a deepwater (water depth of over 7,000 ft (2,134 m)) location in the Gulf of Mexico, an operator was struggling to see the approaching reservoir top during the landing section.
Summary Summary Kazakhstan: First Complete Wireline Replacement in Kazakhstan Sign in required
Explore alternative means to acquire the well information while reducing rig time and eliminating multiple logging runs.
Summary Summary UK: Operator improves reservoir understanding in a complex-fracture horizontal well in hard-rock granite basement Sign in required
In an offshore well in the United Kingdom (UK), the operator wanted to perform an evaluation of a complex-fracture horizontal well in a hard-rock granite basement. It was critical to identify faults, along with large and small fractures, in order to determine if the reservoir was economically viable to produce.
Summary Summary USN-Canada: Operator improves reservoir exposure to 100% with innovative Sperry Drilling geosteering solution despite hole-size challenge Sign in required
With a drilling program of multiple unconventional wells, an operator in Alberta, Canada has been searching for a solution to improve the economic viability of its assets to a lower cost per BOE.
Summary Summary GOM: An operator saved an estimated US$500,000 by staying completely within the target window Sign in required
An operator in the Gulf of Mexico wanted to increase production and recovery in a mature field, but was faced by two main challenges.
Summary Summary Middle East: Operator Gathers Valuable Formation Features with the Only Service in Larger Hole Sizes Sign in required
Due to a lack of seismic data in a challenging remote location offshore in the Middle East, an operator was drilling several deepwater pilot holes for gas exploration in order to gain as much information as possible for well correlation and to gather insight into understanding the geological structure and depositional environment.
Summary Summary Papua New Guinea: AFR™ Sensor Helps Major Operator Isolate Problematic Shale Formation, Saving Valuable Rig Time Sign in required
In the Antelope field, Total needed to accurately pick the 9-5/8-inch casing point in the uppermost portion of a fractured carbonate reservoir above a total loss transition zone, while being able to isolate the reactive and over-pressurized shale above the reservoir.
Summary Summary U.K. Offshore: Operator Saves Significant Rig Time by Gathering Complete Formation Evaluation Data in Real Time Sign in required
In an offshore U.K. well, an operator needed to obtain a complete formation evaluation (FE) data set to measure reservoir and overburden characteristics in a deviated well.
Summary Summary Oman: Operator Proves Cost Savings With LWD High-Resolution Imaging Service Sign in required
Borehole imaging is one of the most rapidly advancing technologies in wireline logging and logging while drilling (LWD). In an onshore horizontal well in Oman, an operator needed more details of the geology in the reservoir in order to gain a better understanding of the distribution of faults, natural fractures, borehole breakouts, and drilling-induced fractures along the well path.
Summary Summary North Sea, Norway: Operator Successfully Runs 5 ¾-inch Slim-Hole Drilling Operation with Geo-Pilot® RSS System Sign in required
In a mature field on the Norwegian Continental Shelf of the North Sea, an operator had attempted twice to drill a new extended-reach drilling (ERD) wellbore with a 2.05 measured depth (MD) to true vertical depth (TVD) ratio that resulted in the bottomhole assembly (BHA) becoming lost in hole above the reservoir.
Summary Summary Venezuela: ADR™ sensor geosteers and places the wellbore entirely in the "sweet spot" with better reservoir properties Sign in required
In a complex environment in Venezuela, a conventional well presented a challenge for optimal well placement because of changes in the lateral facies, creating high stratigraphic uncertainty.
Summary Summary Middle East: AFR™ Guides Horizontal Wellbore Within Two-Foot Narrow Target Zone And Saves $1.25 Million Per Lateral Sign in required
Harsh desert conditions of a mature field in a remote Middle East location were only part of the challenge this operator faced in planning a horizontal well through a fractured carbonate formation.
Summary Summary Mexico: ADR Guides Geosteering Service to Drill for the First Offshore Horizontal Well to Increase Production in a Particular Field in Mexico Sign in required
Seeking to increase production from its mature operating fields by incorporating commercial production of light hydrocarbons, Pemex planned to drill the first horizontal well in this particular offshore field in Mexico.
Summary Summary Ecuador:Operator Saves a Well from Abandonment in Problematic Field Sign in required
Operaciones Rio Napo, an operator in Ecuador, was drilling a difficult wellbore section with multiple formation changes consisting of interbedded shales, limestones, and sandstones.
Summary Summary Mexico: Operator Saves Time USD 7.5 Million in Deepwater Rig Time by Acquiring Crucial Formation Evaluation Data in Real Time Sign in required
An operator on a deepwater well had recently issued an internal mandate seeking opportunities to reduce the authorizations for expenditure (AFEs) associated with drilling its oil and gas exploration and development projects.
Summary Summary LWD Log Interpretation Charts Sign in required
This document provides an insight into the sensitivity of LWD measurements to changes in the borehole environment and the impact that this has on the evaluation of a reservoir.
Summary Summary ADR™ Azimuthal Deep Resistivity
ADR Azimuthal Deep Resistivity Animation
Summary Summary AFR™ Azimuthal Focused Resistivity Sensor
AFR™ Azimuthal Focused Resistivity Sensor Animation
Summary Summary EarthStar™ Ultra-Deep Resistivity Service - Sales Data Sheet
The EarthStar™ ultra-deep resistivity service illuminates and maps reservoir and fluid boundaries more than 200 feet (61 meters) from the wellbore. In deepwater and mature fields, this technology helps operators to maximize asset values and plans for future field developments by mapping pockets of hydrocarbons, allowing for real-time steering decisions, and eliminating costly pilot holes and sidetracks.
Summary Summary M5™ Integrated LWD Service
Formation Evaluation and Drilling Optimization in One Compact Collar
Summary Summary Geo-Span® Downlink Service
Communicate with downhole tools without impacting drilling
Summary Summary EWR®-PHASE 4™ Electromagnetic Wave Resistivity Sensor
EWR®-PHASE 4™ sensor is a high-frequency LWD induction resistivity sensor.
Summary Summary ADR™ Azimuthal Deep Resistivity Sensor
The ADR azimuthal deep resistivity sensor combines a deep-reading geosteering sensor with a traditional multifrequency compensated resistivity sensor.
Summary Summary AFR™ Azimuthal Focused Resistivity Sensor
The AFR™ sensor from Sperry Drilling services delivers high-resolution LWD borehole imaging for improved production, more accurate reserve estimates and better reservoir structure understanding.
Summary Summary EarthStar™ Ultra-Deep Resistivity Service - (Russian)
The EarthStar™ ultra-deep resistivity service illuminates and maps reservoir and fluid boundaries more than 200 feet (61 meters) from the wellbore. In deepwater and mature fields, this technology helps operators to maximize asset values and plans for future field developments by mapping pockets of hydrocarbons, allowing for real-time steering decisions, and eliminating costly pilot holes and sidetracks.
Summary Summary AFR™ Azimuthal Focused Resistivity Sensor
Delivers high-resolution resistivity images for identifying dip, fractures, and borehole breakout. It also provides omni-directional, laterolog-type resistivity data, electrical images of the formation, and at-bit resistivity (ABR) measurements.
Summary Summary EarthStar™ Ultra-Deep Resistivity Service
Innovative, disruptive technology that maps reservoir and fluid boundaries more than 200 feet (60 meters) from the wellbore – over twice the depth of investigation of current industry offerings.
Summary Summary ADR™ Azimuthal Deep Resistivity Sensor
Provides deep reading resistivity up to 18 feet (5.5 meters) into the formation – over 2,000 unique measurements for both precise wellbore placement and more accurate petrophysical analysis
Summary Summary EWR®-PHASE 4 Resistivity Sensor
Delivers excellent vertical resolution in low-resistivity, thinly-bedded formations in boreholes from 3-3/4 to 30 inches.
Summary Summary Resistivity Logging
Resistivity is the ability of a substance to impede the flow of an electrical current. This is a very important rock property in formation evaluation as it helps to differentiate between formations filled with salty waters (good conductors of electricity) and those filled with hydrocarbons (poor conductors of electricity).
Summary Summary M5™ Integrated LWD Service
Innovative, disruptive technology that maps reservoir and fluid boundaries more than 200 feet (60 meters) from the wellbore – over twice the depth of investigation of current industry offerings.
Summary Summary Quasar Trio™ M/LWD Triple-Combo Service
Retrieve LWD triple-combo FE data of resistivity, density, and porosity in 200°C environments
Related Information

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