Engineering Services

Engineering Department (ED)

Operations Support & Data Services:

Providing timely & reliable processing, integration, & interpretation of your E&P data.

Provide the services which are designed to manage, interpret, and deliver data when and where it is needed. Also provide timely and reliable processing, integration, and interpretation of all types of E&P data, make the most of the value of the data and allowing our customers to make better-informed operational decisions.

Our interpretations provide reservoir & rock properties that are key to characterizing and understanding the Lithology, Porosity, Permeability, Formation Thickness, Water Saturation, Pressure, Rock Mechanical properties, and etc. These results enable our clients to make decision about long-term exploration and development strategies.

Geoscientists and Petro Technical Engineers work and supports clients  from pre-job,  realtime acquisition to final delivery of results to confirm the data and interpretation products meet the clients needs. Since E&P data must often be processed, interpreted, and delivered quickly to support critical decisions impacting well-site operations, we provides services on TAT (Turn Around Time) basis.

Key Services

Engineering Department is providing the SLD technology in order to support the wirline and D&M data interpretation to maximize the information from well & Filed data measurements. Different disciplines are cover in PE:

Geophysics is used to map the subsurface structure of a region, to illustrate the underlying structures, spatial distribution of rock units, and to detect structures  such as faults, folds and intrusive rocks. This is an indirect method for assessing the likelihood of ore deposits or hydrocarbon accumulations.Industry-leading software highten your comprehension of the subsurface . We offer a diverse range of  softwares  for everything from geophysical survey plan including siesmic, electromagnetic methods, borehole geophysics, gravity techniques, and quality control to processing and model building.

Gravity and magnetic methods are a key part of exploration. They do not replace seismic. Rather, they add to it. Despite being comparatively low-resolution, they have some very big advantages. Being responsive to lateral variations in rock properties, gravity and magnetic methods are best suited for detecting steep  discontinuities such as faults.

Identifying aquifers with major water supply potential can be studied using geophysical and geological measurments. We have the capability to assess aquifer  potential and well salinization mechanisms using Sealand advanced simulation and visualization potency in close cooperation with Water Resources commission.

  • Geo-mechanic and technical Services

Predict drilling risks in your first well and maximize recovery from mature assets with enhanced technical services for Geo-mechanics.One of our major projects is to anticipated properties of sea floor and type of enginnering structure such as pipe lines, platforms and drilling rigs to be installed using geophysical and geotechnical study.

A petrophysical data set commonly contains a combination of overlapping sub‐populations, influenced by different geological factors. To understand the geological controls on physical properties in hard rock environments it is necessary to analyses the petrophysical data not only in terms of the properties of different rock types. It is also necessary to consider the effects of processes such as alteration, weathering, metamorphism, and strain, and variables such as porosity and stratigraphy. Evaluate the rock properties that help determine reserves and reservoir producibility, decide where to complete and how to stimulate, pinpoint where to drill next, and devise long-term field development strategies.

Petrophysical borehole logs can expedite ore boundary delineation, rock mass characterisation, and (sometimes) grade estimation. Benefits during production include substitution of core drilling with cheaper percussion drilling, and blasting pattern optimisation. Less well recognised is the value of petrophysical measurements during feasibility studies and at the onset of mine development. Sonic velocity logging of delineation holes can yield a continuous in situ record of rock strength, for example. The benefit of petrophysical data at an early stage in a project is enhanced three‐dimensional understanding of the geological and geomechanical environment in the appropriate time frame to influence major mine design decisions.

Nearly all of the logging devices currently used in the petroleum industry have found some application in metallic mineral exploration and mining.

Borehole imaging probes and vertical seismic profiling are now a common service provided in boreholes drilled for oil, mineral exploration, geotechnical investigations and groundwater programs.

Common applications are:

Geotechnical site investigations where slope stability, rock support are key requirements.


Structural geology.

Casing integrity.

Mineral exploration

Geological, geophysical and geochemical methods, and drilling technologies could improve the effectiveness and productivity of mineral exploration. Our company is able to gather and interpret different data required in other exploration field such as copper and metal-enriched ore deposits using surface and subsurface equipment.

By doing advanced interpretation on real time LWD and MWD data, PE is providing the most advanced well trajectory design and geo-streering services in order to improve well placement.

SLD is using the new technology in data gathering, data processing and interpretation of borehole seismic and vertical seismic profiling (VSP) and acting as a market leader in this domain.

This service includes PSP (Production logging) Pre/Post acids, interpretation which gives efficient production contribution of each reservoir, evaluate the acid job, detect the possible water entry points and also detect any possible cross flow(s) during a shut-in survey,  zones rate.

Sampling & Interpretation which will gives:

Reservoir Pressure versus Depth, Reservoir fluid Mobility, Sampling for lab analysis, PVT, Vertical Permeability

Seismic Services

 Seismic Data Processing

SLD is able to do advanced seismic data processing techniques by using the latest software and hardware in SLD premises in Iran & China. Different seismic processing workflow could be provided by us:

  • Conventional Seismic Processing
  • Advanced Technique Of Velocity Analysis (SCVA)
  • Pre-Stack Time Migration (PSTM)
  • Pre-Stack Depth Migration (PSDM)
  • Etc.

Seismic Interpretation

Providing seismic interpretation using Schlumberger Standard software (Petrel and GeoFame) for seismic structural interpretation and depth conversion. The list of available services in this domain could be summarized as:

  • Time Horizons And Faults Interpretation                                                                      
  • Mapping
  • Complex Structure Interpretation
  • Salt Interpretation
  • Depth Conversion
  • Advanced Interpretation Of Subtle Faults
  • Multi Survey/Vintage Interpretation
  • Etc.

Seismic Reservoir Characterization

SLD is able to provide different consultancy services for seismic reservoir characterization by using latest commercial software and most experienced people in SLD premises in Iran & China. Some of the services are listed below:

  • Seismic Facies Analysis
  • Seismic Attribute Study For Reservoir Properties Prediction
  • Post Stack Seismic Inversion
  • Pre-Stack Simultaneous Seismic Inversion
  • Seismic AVO
  • Seismic Geo-Hazard Analysis And Pore Pressure Prediction
  • Spectral Decomposition And Subtle Structural Interpretation
  • Etc.


Static and Dynamic Modeling

SLD has all the required software, hardware and people for reservoir static and dynamic modeling for carbonate and sandstone reservoir. Some of the most important available services could be summarized as:

  • Advanced Facies Modeling (Mps)
  • Reservoir Structural Modeling
  • Reservoir Property Modeling
  • Fracture Modeling
  • Volume Calculation
  • Uncertainty Analysis
  • Dynamic Reservoir Modeling
  • Master Development Plan Preparation
  • Etc.

Petroleum System Modeling

We are using the advanced technology for Petroeum System Modeling and Basin Modeling. Petroleum system modeling is a critical key in exploration success and risk reduction. SLD is also able to provide different laboratory tests required for geochemical analysis for petroleum system modeling. SLD has valuable experiences in Petroleum System Modeling specially in Central Iran and offshore Iran. As the petroleum system modeling is a multidisciplinary study, this knowledge is a valuable factor that can help us for other consultancy project. Most important available services in this domain could be summarized as:

  • 1D, 2D And3D Petroleum System Modeling In Different Domains.
  • 2D And 3D Structural Reconstruction And Back Stripping.
  • Play To Prospect Evaluation
  • Prospect Ranking.
  • Prospect Charge, Reservoir And Seal Risk Assessment.
  • Hydrocarbon Tracing
  • Geochemical Laboratory Tests
  • Exploration Block Assessment
  • Structural Geology And Tectonic Assessment


SLD provides Geo-mechanics and well-bore stability analysis for different fields in Iran. SLD Geo-mechanics team is ready to help our client for mitigating drilling hazards and improving productivity. Some of the most important available services could be listed as:

  • 1D MEM And Well-bore Stability Analysis
  • 1D Sand Control And Management
  • Safe Mud Window Design
  • 3D In-Site Stress Modeling
  • Well trajectory design and optimization
  • South Pars Reservoir Model Updating, PetroPars.
  • CheshmehKhosh 3D Seismic Processing (PSDM), ICOFC.
  • Dehloran 3D Seismic Processing (PSTM), ICOFC.

Available Hardware and Software

SLD will provide some of special services in its premises outside of Iran in China. The available hardware and software for these services (Such as Geophysical processing) will be available upon request and according to project needs. In this section the available Hardware and Software for regular project will be explained.


This list of the software are not limited to the below list and other software could be provided upon the project need case by case.


  • Interactive Petrophysics (IP)
  • Geolog
  • GeoFrame Geology Module (Geology office, Boreview, Image, etc.)
  • Petrel


  • GeoFrame (Boreseis), VSP
  • GeoFrame (Charisma Package)
  • GeoFrame (IESX Package)
  • Petrel E&P Platform
  • Fugro-Jason Geoscience Work brench


  • IP (interactive petrophysics)
  • Geolog
  • GeoFrame (ElanPlus, Preplus, Ressum, lithotoolkit, etc.)


  • PetroMod 1D, 2D, 3D Suite
  • Dynel Structural Reconstruction
  • PMWIN(3D-Groundwater Modeling)


  • Petrel
  • Pore Pressure Window
  • RiskTRAK
  • DrillMAP
  • GeoFrame
  • Caliban
  • Hosana
  • BorStress

Drilling and Well Placement

  • Drilling Office
  • RTGS
  • Petrel

Reservoir Engineering and Dynamic Modeling

  • Eclipse 100, 300, 500
  • Frontsim
  • Petrel


This list of the available hardware is not limited to the below list and other hardware could be provided upon the project need case by case specially clusters for seismic processing which will be provided outside of Iran. The most important available hardware in WSI office in Iran could be summarized as:

  • Windows 7 Pro Workstation, Fujitso 64bit, 12 Cores, 128 GB of RAM, 2 Terabyte (10K) HDD, NVIDIA, Quadro 6000 (6GB Dedicated RAM), x 1
  • Windows XP Pro Workstation, ASUS, 8 Cores, 32 GB of RAM, 1 Terabyte HDD, ATA HD 5970, x 1.
  • ASUS Laptop, Dual Core, 8 GB of RAM, 500 MB HDD, NVIDIA Geforce GT 220, x14.
  • Sun Solaris Workstation, 4 Cores, 32 GB of RAM, UNIX x 4.
  • Toshiba Qusmio Laptop (Linux), 2 Cores, 8 GB of Ram x 2.