Measurement-While-Drilling (MWD)

Halliburton utilizes measurement-while-drilling (MWD) surveying technology to determine the well path and its position in three-dimensional space. MWD is a valuable tool that can establish true vertical depth, bottom-hole location, and orientation of directional drilling systems.

A range of measurements of the drillstring, BHA and wellbore properties are available to ensure the drilling is occurring according to plan and to identify conditions that could lead to equipment damage or other non-productive time events. These measurements provide information on:

  • The forces acting on the drillstring and BHA including dynamic behavior and the occurrence of vibration
  • The static and dynamic pressures internally within the drillstring and the annulus
  • The size and shape of the wellbore itself

Sperry Drilling services leads the industry with the largest and most robust high pressure, high temperature offering, and invests in significant research and development in HP/HT technology. In HP or HT wells, equipment is required to withstand temperatures higher than 300°F/149°C and pressures above 18,000 psi/124 MPa. Today, the majority of Sperry Drilling's measurement/logging-while-drilling (M/LWD) tools are rated to 347°F/175° C and 25,000 psi/172 MPa.

Quasar Trio® M/LWD Triple-Combo Service

Quasar Trio® M/LWD Triple-Combo Service

Enhances reservoir understanding in extreme-temperature (200°C/392°F) environments
Quasar Trio® M/LWD Triple-Combo Service
SOLAR® Suite of MWD/LWD Service
Deliver exceptional MWD/LWD performance and accurate reservoir measurements under extreme-temperature downhole conditions

Measurement-While-Drilling (MWD)

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Summary Summary MaxSurvey Infographic Sign in required
Infographic about MaxSurvey
Summary Summary Survey Management Infographic Sign in required
Infographic about Survey Management
Summary Summary Oilfield Technology: M/LWD Q&A Sign in required
2017 Oilfield Technology M/LWD Q&A article discusses the applications and benefits of the Radian™ Service and 9 1/2-inch ALD™ Service
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 Norway: Operator saves at least two days by running XCAL™ LWD caliper tool to determine hole quality and proper cement calculations Sign in required
To develop an offshore well in Norway, an operator needed to perform proper cement calculations, confirm that the hole was properly reamed, and evaluate packer placement for completion.
Summary Summary Azerbaijan: Geo-Pilot® System Sets New Caspian Record Sign in required
BP needed to drill a well through a difficult section of formation well known to cause tool-damaging vibration.
Summary Summary Thailand: SOLAR® M/LWD Services Used on Thousands of High-Temperature Wells in the Gulf of Thailand Sign in required
SOLAR® M/LWD Services Used on Thousands of High-Temperature Wells in the Gulf of Thailand
Summary Summary Oman: Operator Locates Top of Fish Target with ABI™ Sensor Sign in required
An operator working in a mature field in Oman attempted to drill a deviated well, but, while drilling the 8½-in. (215.9-mm) buildup section, the bottomhole assembly (BHA) became stuck for approximately a month.
Summary Summary Gulf of Mexico: Sperry Combines ALD™ and DGR™ Sensor Data for Innovative Solution in Difficult GOM Deepwater Well Sign in required
In this deepwater well in the Gulf of Mexico, the customer began experiencing problems with the borehole after successfully drilling to the conventional core point of the main reservoir.
Summary Summary Haynesville Shale LA, USA: ExtremeHT-200™ M/LWD Sensors Help Operator Save Over US$145,000 Sign in required
An operator in the Louisiana Haynesville shale play required reliable and accurate measurement/logging-while-drilling (M/LWD) data while drillling horizontal wells in an extreme high temperature environment.
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 Malaysia: Talisman Uses Sperry’s Evader® MWD Gyro Service to Avoid Downhole Collisions Sign in required
Evader® Gyro-While-Drilling (GWD) service was used to closely monitor bottomhole assembly (BHA) progress inside the magnetic interference zone.
Summary Summary Venezuela: Petroindependencia Drills the Longest ERD Well While Staying 100 Percent in Target Zone Sign in required
Petroindependencia, a Petróleos de Venezuela S.A. (PDVSA) joint venture, operates in the Orinoco oil belt, where the target reservoirs are located in the Morichal member of the Oficina formation, which can be characterized as a shallow, unconsolidated formation.
Summary Summary Brazil: Operator Saves US$75 Million in Ultra-Deepwater Well with High Vibration and Salt Creep Issues Sign in required
An operator had a plan to drill a 5,734-ft (1,748-m) ultra-deepwater well in 149 days that was characterized as having high vibration issues in a salt formation and a long history of competitor failures.
Summary Summary Mexico: QBAT™ sensor helps Pemex to achieve sonic data in large 26 inch complicated soft-formation well Sign in required
In an exploratory well in the Akal field of Mexico, one of the main objectives of Pemex was to obtain reliable, high quality LWD information while drilling a 26-inch hole in a difficult soft formation.
Summary Summary Canada Alberta: Operator Reports Total Estimated Savings of More Than US$7.6 Million Sign in required
An operator working in the McMurray formation of northern Alberta, Canada, sought to increase operational efficiency and decrease total days per well. The operator had previously taken seven to eight days to drill a well at an approximate cost of US$997,000 (C$1.3 million) per well.
Summary Summary Mexico: Sperry Drilling’s New Data Compression Software Facilitates Geosteering Within Thin Reservoir while Significantly Reducing Drilling Time Sign in required
In this shale gas well in the Eagle Ford play in Mexico, the primary objective was to drill a horizontal well with maximum lateral exposure within the 10 feet (3 meters) thick production zone. The challenge was to stay in the relatively thin shale pay zone while maintaining an aggressive rate of penetration.
Summary Summary South East Asia: Quasar Pulse℠ M/LWD service saves customer approximately USD 1 Million Sign in required
An operator wanted to reduce costs and achieve logging objectives on high-temperature wells drilled from a jack up rig in 243 feet (74 meters) of water, offshore South East Asia, where bottomhole temperatures are among the highest in the world.
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 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 Colorado, USA: Sperry’s Directional Drilling and Measurement-While-Drilling Services Key in Piceance Basin Tight Gas Development Project Sign in required
Sperry’s excellent drilling performance with minimal failures and reduced operational times has allowed the operator to achieve the best performance results in the Piceance Basin.
Summary Summary United States, Alaska: Interpolated In-Field Referencing (IFR2) service confirms accuracy of MWD data Sign in required
When an oncoming magnetic storm capable of causing errors in survey calculations was approaching, a customer’s drilling engineer for a rig on Alaska’s North Slope asked Sperry Drilling Alaska Survey Management Group to provide the interpolated In-Field Referencing (IFR2) service for the storm’s duration.
Summary Summary Balikpapan: ROC Capabilities Enhance Vibration Mitigation for Geo-Pilot® System Record Run Sign in required
In the Nubi Field, offshore Indonesia, a gas development well in 226 feet (69 meters) of water required the critical 12-¼-inch section to penetrate a limestone formation with hard cemented stringers. Typically, in this section, various modes of vibration and problems with sensor pulse detection would damage drilling equipment and hinder formation evaluation data acquisition, slowing progress and raising costs with excessive tripping.
Summary Summary USA, California: Operator Saves an Estimated $992,000 using a Matched Drilling System Sign in required
Halliburton had previously drilled wells in the field using a standard steerable motor assembly, but now needed to deliver improved performance using a solution able to orient and steer the well at deeper depths while overcoming strong dipping tendencies and a natural walk of the bottomhole assembly (BHA).
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: Geo-Pilot® Rotary Steerable System with ABI™ At-Bit Inclination Sensor Provides Real Time Inclination Readings Saving PEMEX 3.8 Days in Rig Costs Sign in required
PEMEX, the national oil company of Mexico, contracted Sperry Drilling services to drill an offshore development well in an exploratory reservoir, 113 km northeast of Ciudad del Carmen in the state of Campeche, Mexico. The objective of this project was to deliver commercial oil production and provide primary field information for the customer.
Summary Summary Columbia: Remote Operations Center Facilitates Nimble Geosteering to Narrow Target in Heavy Oil Sands Sign in required
To reduce costs by improving drilling time, an operator drilling through complex shale and sand formations in a remote Colombian field, where the oil-water contact can reach to within 10 feet (3 meters) true vertical depth (TVD) below the top of sand, required accurate real-time information to navigate to the target zone.
Summary Summary Norway: Sperry Drilling Uses Real-Time Technologies to Remotely Operate Offshore Rigs Sign in required
Sperry Drilling services used real-time technologies and innovative work methods to relocate traditional offshore tasks onshore, reducing offshore workload.
Summary Summary USA, North Dakota Bakken: Operator Achieves More Accurate Wellbore Placement Using a New Azimuthal Gamma Ray Service Sign in required
An operator in North Dakota’s Middle Bakken shale formation sought a solution that would enable effective drilling and geosteering in a formation with little gamma ray variation, while minimizing drilling costs.
Summary Summary USA, Southern: Operator Reduces Wellbore Position Uncertainty and Avoids Potential Costly Sidetracks for a Blowout Relief Well Sign in required
While conducting operations on an unconventional relief well for a blowout in a field in the southern part of the USA, an operator observed a discrepancy in the well position after analyzing the data from two separate surveys in the same wellbore.
Summary Summary Survey Management Datasheets Sign in required
Datasheets of the services survey management offers
Summary Summary Radian® Azimuthal Gamma Ray and Inclination Service
The Radian® azimuthal gamma ray and inclination service provides a cost-effective solution to geosteering challenges.
Summary Summary 9-1/2-inch ALD™ Azimuthal Lithodensity LWD Service
The 9-1/2-inch ALD™ azimuthal lithodensity logging-while-drilling (LWD) service from Halliburton is the industry’s first and only service capable of delivering azimuthal density and ultrasonic caliper measurements in real time in deepwater boreholes ranging from 14-1/2 inches to 17-1/2 inches.
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 Quasar Pulse M/LWD Service
The Quasar PulseSM measurement/logging-while-drilling (M/LWD) service delivers exceptional performance even at extreme temperatures, providing accurate and timely reservoir measurements for precise wellbore placement.
Summary Summary ALD™ Azimuthal Lithodensity Sensor Datasheet
Providing High-Quality Density Measurements and Formation Images
Summary Summary XBAT™ Azimuthal Sonic and Ultrasonic LWD Service
The XBAT LWD service delivers accurate acoustic measurements in a wide range of formations via sensors and electronics.
Summary Summary CTN™ Compensated Thermal Neutron Sensor
Identifying Complex Lithologies and Gas
Summary Summary HP/HT: 6. Total
Halliburton continues to push the limits of HP/HT technologies and processes for increasing efficiency, recovery, safety and reliability
Summary Summary HP/HT: 3. Definition
UltraHT-230 redefines the standard, reliably taking operators to the next level
Summary Summary HP/HT: 1. Overview
Ultra High Temperature - the next fontier for oil and gas exploration
Summary Summary HP/HT: 2. Rethinking
UltraHT-230 M/LWD sensors
Summary Summary Quasar Trio® M/LWD Triple-Combo Service - Thailand R&M Facility Video
Learn the benefits of this service and take a quick tour of the R&M facility. (No audio.)
Summary Summary HP/HT: 5. Depth
UltraHT-230 sensors help make drilling less perilous, more productive and more cost effective than ever before
Summary Summary HP/HT: 4. Testing
UltraHT-230 sensors tested for conditions well beyond anything available today
Summary Summary World's First Extreme-High-Temperature LWD Triple-Combo Run
With extreme bottomhole static temperatures approaching 392°F (200°C), some of the wells in the Gulf of Thailand are among the hottest in the world – far beyond the reach of conventional measurement-while-drilling/logging-while-drilling(M/LWD) tools.
Summary Summary TOTAL S.A. Drills to Record Depths in HP/HT Well and Saves USD 5 Million
Engineered MWD/LWD solution delivers reliable measurements in extreme temperature environment
Summary Summary Operator Maximizes Asset Value in Extreme-High-Temperature Wells
Quasar Trio® M/LWD Triple-Combo service reduces well time in 24-slot platform operation.
Summary Summary Operator Drills Gulf of Thailand’s Longest Openhole Production Section...
Quasar Trio® M/LWD Triple-Combo Service reduces well time in extreme-temperature well
Summary Summary High-temperature drilling and completions in the Haynesville Shale
Continuous improvements helped oil company double production from high-temperature wells
Summary Summary 9½-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) Service
The 9-1/2-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) service from Halliburton is the industry’s first and only service that delivers high-quality azimuthal density and ultrasonic caliper measurements in real-time for deepwater boreholes ranging from 14-1/2 inches to 17-1/2 inches.
Summary Summary CTN™ Compensated Thermal Neutron Sensor
LWD neutron porosity tool provides accurate formation porosity, fluid typing and lithology (in combination with density). Larger tools also feature an acoustic caliper, used to correct the neutron porosity measurement for borehole effects and to provide measurements of borehole size.
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 XBAT™ Azimuthal Sonic and Ultrasonic LWD Service
LWD sonic tool with multipole transmitters and four azimuthal receiver arrays along with a 4-pinger acoustic caliper.
Summary Summary Pressure-While-Drilling (PWD) Services
Provides annular pressure, internal pressure and temperature measurements. Aids in detecting lost circulation and flow/kicks before they happen.
Summary Summary Wellbore Surveying
Wellbore Surveying
Summary Summary Directional Sensors
When drilling vertical, horizontal, or extended reach wells, obtaining accurate measurements of inclination and azimuth is a fundamental requirement. For these measurements, Sperry Drilling services offers three types of MWD directional sensors and the Evader® MWD gyro service.
Summary Summary Drillstring Vibration Monitoring
Drillstring vibration monitoring
Summary Summary Wellbore Pressure Monitoring
Wellbore pressure monitoring
Summary Summary Borehole Size Monitoring
Borehole size monitoring
Summary Summary Drillstring Force Monitoring
Drillstring Force Monitoring
Summary Summary DrilSaver™ III Vibration Monitoring System
System that identifies and measures the magnitude of drillingvibrations through the high speed sampling and analysis of surface drilling parameters.
Summary Summary Evader® Gyro-While-Drilling Service
Aids in orienting and steering the drillstring. Improves wellbore guidance to avoid collision with other wells on multi-well platforms. Immune to magnetic interference.
Summary Summary Radian® Azimuthal Gamma Ray and Inclination Service
The Radian® azimuthal gamma ray and inclination service provides high-quality borehole images for geosteering, and precise gamma-ray measurements for reservoir evaluation.
Summary Summary Survey Management
This service delivers a comprehensive well positioning approach, generating the necessary risk versus reward analysis and survey program.
Summary Summary GeoTap® Sensor
LWD formation tester obtains real-time direct pore pressure measurements.
Summary Summary Measurement-While-Drilling (MWD)
Sperry leads the industry with the widest array of MWD/LWD technologies achieved through our focus on formation evaluation - acquiring early, accurate, and reliable reservoir measurements during or after the drilling process.
Summary Summary DDSr™ Drillstring Dynamics Sensor
Measures downhole vibration to help avoid or eliminate damaging stress to tools, motors, bits, etc.
Summary Summary SOLAR® Suite of MWD/LWD Service
Deliver exceptional MWD/LWD performance and accurate reservoir measurements under extreme-temperature downhole conditions
Related Information

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