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Drilling

Drilling

Houston Well Services Limited (HWSL) Directional Drilling services are manned by highly skilled and experienced Nigerian Directional Drillers, we present to our clients wide-ranging experience to their Directional Drilling Operations. Our Board members have over 25 years of professional field and management of Directional Drilling experience acquired with the International Oil Service Companies (IOSC) and Consultancy with Major Oil and Gas producers. These wealth of experiences are brought to HWSL for effcient and effective service delivery to our clients.

HWSL has a fleet of NOV Drilling Motors ranging in specifications from low speed – high torque, high speed - low torque to achieve drilling applications.


Vector Series 50 Drilling Motor

The Vector Series 50 drilling motor provides strength and reliability with a short bit-to-bend, allowing superior directional performance and the ability to drill a curve and lateral in a single run.

Vector Series 50 platform provides a robust, high-torque motor that aids in better directional control

The Vector™ Series 50 drilling motor incorporates the next-generation universal joint design, which features torque-transferring faces and a driveshaft that is up to 25% larger in diameter. The larger driveshaft enables the motor to provide exceptional torque capability and reliability. Combined with 100% flow-through-the-bit technology, this allows for maximum drilling efficiency. The short bit-to-bend bearing pack features an oil life equivalent to our previous fulllength assemblies, providing the ability to reach total depth (TD). A locking feature prevents the adjustable assembly from being set incorrectly on the rig floor, reducing downtime at the rig.

Benefits

  • Faster drilling – Designed to achieve high rate of penetration (ROP)
  • Shorter bit-to-bend – Allows for superior directional performance
  • Increased strength – 35 to 68% stronger than previous-generation motor technology
  • Extreme durability – Redesigned internally, connections minimized, and components mechanically locked
  • Locking feature – Bend angle cannot be set incorrectly on the rig floor

Applications

  • High torque
  • Interbedded or hard formations
  • Curved
  • Lateral
  • Vertical

RSS

RSS technology has become a standard requirement in many directional drilling operations around the globe. We have invested in developing RSS to ensure that directional drillers have access to this critical technology and we offer two RSS technologies based on the industrypreferred “push-the-bit” steering method. VectorEXAKT™ RSS – precise vertical control for large diameter sections.

VectorZIEL™ RSS – advanced system with integrated MWD/LWD for directional and horizontal sections. The VectorEXAKT RSS provides precise vertical control in hole sizes ranging from 17 ½ to12¼ in. The system functions autonomously and uses precise, near-bit inclination sensors to maintain verticality, enabling directional drillers to drill vertical sections faster by eliminating the need for time- intensive slide drilling. The sensors and steering system are located in a slow-rotating housing that isolates them from harmful drillstring vibrations and minimizes wear on the external elements, making the tool ideal for hard or abrasive applications.


Using these integrated sensors and pulser, the near-bit inclination and gamma data is available in real time. The VectorEXAKT RSS is the most precise vertical drilling tool on the market, and with the option to run below a motor, the system provides directional drillers with the confidence and ability to achieve the highest ROP possible without sacrificing verticality.

The VectorZIEL RSS enables directional drillers to drill complex 3D well profiles in hole sizes ranging from 6 to 13¾ in. The system uses hydraulically activated steering ribs located in a slow-rotating housing to push the bit in the desired direction and is powered by an integrated mud turbine. Using integrated near-bit inclination and azimuth sensors along with a closed-loop control system, the VectorZIEL RSS delivers the desired well trajectory with limited interaction required. Tool reliability is enhanced since the sensors and critical steering elements are located in the slow-rotating housing, which is insulated from the harmful effects of stick-slip and other torsional vibrations.


VectorZIEL 600 RSS

When combined with an integrated pulser, MWD sensors, and a patented calibration system, the VectorZIEL RSS is the only tool on the market that can provide accurate near-bit survey measurements in real time. An automated flow-bypass downlinking system enables steering adjustments to be made quickly and reliably with the click of a button. The VectorZIEL RSS is available with optional azimuthal gamma and resistivity measurements, ensuring our customers can operate in almost all markets globally.

We offer the Vector RSS for sale and rental with various options for maintenance to meet your needs, including training and equipment to enable customer-performed repair and maintenance and OEM maintenance at one of our worldwide service centers.


With a legacy dating back more thatn 30 years and multiple world-class R&D facilities, directional drillers can be assured that our Vector RSs will reliably deliver the well's directional objectives today and into the future.

Vertical Monitoring Tools

We offer the broadest range of fit-for-purpose vertical monitoring and survey-on-connection tools in the industry under our Teledrift™ and FloTool™ product lines. These tools provide a cost-effective alternative to conventional MWD or wireline-deployed survey tools when drilling vertical sections. The tools can be run without dedicated rigsite supervision, and we offer remote access to survey data.

The Teledrift and FloTool are known worldwide for their simplicity and reliability.


Inclination Tools

  • ProDrift™ tool – ideal for harsh or high lost-circulation material (LCM) environments
  • FloDrift™ tool – ideal for high-temperature applications or where fast surveys are required

Inclination And Azimuth Tools

  • ProShot™ tool – ideal for harsh or high LCM environments
  • FloSurvey™ – ideal for high-temperature applications or where fast surveys are required

Inclination, Azimuth, And Tool Face

  • ProPulse™ tool – ideal for vertical control applications where steering may be required

Measurement While Drilling

The Tolteq™ iSeries platform is our probe-based, mud-pulse MWD.

As a modular platform based on the legacy Tensor design, the iSeries platform provides directional drillers with significant flexibility to configure and deploy the tools in a wide variety of applications. With more than 600 tools sold and in use in 15 countries (as of January 2020), the Tolteq Series MWD platform is a proven, reliable MWD solution for directional drillers.


Tolteq MWD tools are offered in both legacy retrievable design with a bottom-mount pulser or in a fixed, top-mount pulser configuration that provides several benefits, including:

  • High torque
  • Interbedded or hard formations
  • Enables gamma and directional measurements closer to the bit
  • Provides higher LCM tolerance and stronger pulse amplitude
  • Rigidly mounts the MWD toolstring for increased shock and vibration resistance

Tolteq iSeries MWD tools are available either as a ready-to-deploy kit or as individual modules. All Tolteq modules are rated to 347°F (175°C) and 20,000 psi, ensuring they can be used in the widest variety of applications.
  • Directional module (iDM)
  • Retrievable pulser (iTPM)
  • Retrievable pulser with integrated gamma sensor (iPRGM)
  • Top-mount pulser (TMP)
  • Ruggedized gamma module (iRGM)
  • SureMate™ centralizers
  • GUIDE rig floor display and decoder
  • Unmanned configuration (TruVertical)
  • Automated intelligent matrix filtering with automated pulse decoding optimization
  • Wireless link from rig floor to shack (cable link available)

  • User-friendly WITS interface
  • Water-tight, durable Pelican™ case and marine connectors
  • Check-battery voltage and depassivate with the push of a button
  • Eliminate accidental battery drainage through automated depassivation
  • Isolate any part of your toolstring with uphole and downhole connectors
  • Quickly identify inactive signals with LEDs dedicated for each line
  • Lower-end tool box
  • More than 100 items included to maintain and deploy lower ends
  • Job setup tool box
  • Simple but inclusive—all the items needed to set up the next job

NXT

The iSeries NXT products enable Houston Wells to offer additional services and capabilities. With continued development leveraging our world-leading R&D facilities, directional drillers can be assured that the iSeries platform will remain the leading independently manufactured MWD solution.
  • Advanced directional module (iDM NXT)
  • Fast pulsers (TMP NXT and iTPM NXT)
  • Pressure while drilling (optional on TMP)
  • Intelligent rotary pilot valve pulser (iRPV)


LWD Services

The Tolteq™ symmetric propagation resistivity (SPR) MARK II tool
The Tolteq™ symmetric propagation resistivity (SPR) MARK II tool offers real-time logging-while-drilling (LWD) resistivity combined with advanced, high-bandwidth measurement-while-drilling (MWD) tools. The tool creates high-quality resistivity logs with both phase and attenuation measurements in real time—measurement capabilities as well as multiple depths of investigation and vertical resolutions help with the drilling process. With a total of eight curves recorded into memory, the SPR MARK II tool has extremely high-resolution memory data with fast data dump capability. This feature enables our field operators to create high-resolution logs after the run is complete with no impact on drilling time. The eight resistivity measurements can be further enhanced by applying borehole corrections in ToolTracker™, a user-friendly data handling application. The Tolteq iSeries azimuthal gamma-ray (iAZG) measurement module can be used as part of the iSeries MWD string. The tool measures gamma-ray counts in 16-sector measurements with up to 4-quadrants available for real-time transmission.

The tool is now available as an integrated option with the VectorZIEL™ rotary steerable system (RSS).


Features:
  • High-quality, real-time LWD data enhances well placement
  • Multiple depths of investigation
  • Symmetric design for improved data quality
  • Borehole correction data
  • Low-maintenance, reliable design
  • Integration with Top Mount Pulser allows for short bit to gamma and bit to resistivity distance
  • Easily removable and replaceable hard-faced wear bands for cost effective operation in abrasive environments
The Tolteq iSeries near-bit sub (iNBS) tool is a short sub that can be installed directly between the drill bit and motor. This battery-powered tool provides azimuthal gamma and inclination measurements from directly above the drill bit and enables faster detection of formation beds and ultimately more accurate and productive geosteering. The iNBS tool transmits this at-bit data to a receiver probe installed in the Tolteq string, where it is packaged and pulsed to surface together with other MWD data.