Shafiq Ahmed

• Rizvi Education Society

Drilling Maximum Reservoir Contacts (MRC) wells is crucial for the development of mature fields. These operations necessitate precise control of the wellbore trajectory to meet objectives during landing, lateral drilling, and geosteering. A potential risk of collision with existing wells or laterals requires comprehensive real-time anti-collision a...

Drilling Maximum Reservoir Contacts (MRC) wells is crucial for the development of mature fields. These operations necessitate precise control of the wellbore trajectory to meet objectives during landing, lateral drilling, and geosteering. A potential risk of collision with existing wells or laterals requires comprehensive real-time anti-collision a...

Mature fields present a variety of subsurface and drilling challenges, including long laterals, multi-layer targets, and uncertainty in geology and reservoir fluids. In addition, it is essential to complete drilling operations in a timely manner to avoid any risk. Hence, the ability of logging-while-drilling (LWD) real-time data gathering for compr...

The concept of drilling multilateral wells has been applied offshore UAE since the 1990’s, in order to increase the productivity of low permeable sublayers. The subject, mature Carbonate Offshore field is one of the pioneers to the application of Ultra-deep Azimuthal Resistivity technology (UDAR). The lateral drains target different layers with dif...

Field presented here is giant heterogeneous carbonate field consist of multi-stacked reservoirs, located in offshore Abu Dhabi. This paper presents development plan for one of reservoir. It consists of a very large rich gas cap with oil rim. Current development plan is oil production from oil rim with peripheral water injection with no gas injectio...

A sedimentological study of an Offshore, mid-Jurassic reservoir was carried out in order to understand reservoir quality and reservoir architecture. In-house core description, and analysis of open-hole petrophysical log interpretation and conventional core analysis, enabled the authors to interpret the depositional environment and produce hand draw...

The undeveloped sublayers of the prolific offshore Arab reservoir were recently targeted for appraisal drilling, aligning with the ever-increasing efforts to expand production and book new reserves. The first extended reach horizontal well was drilled in this field to evaluate the economic potential of four different reservoir sublayers. Reservoir...

Reservoirs located offshore Abu Dhabi can be complex in terms of sub-seismic structural features such as faults and localized deformations. With use of high-resolution resistivity image logs, a TST (true stratigraphic thickness) technique, along with 3D structural models, uncertainties related to sub seismic structural ambiguities are resolved and...

The present study was conducted to determine the prevalence of Giardia lamblia in Stool samples of diarrheal patients in Quetta. Two hundred thirty fecal samples were collected randomly from the male female and children patients who visited OPD (outpatient department) of different hospitals of Quetta from February 2017 to August 2017. The samples w...

The value of the continuing integration of logging-while-drilling (LWD) and directional drilling processes has been more prominent in the current economic environment in terms of optimizing field development costs by means of precise well placement, as well as improved reservoir characterization and drilling performance in real time. A successful h...

Staphylococcus Mastitis is a one of the costly and major problem for dairy animals in Pakistan and worldwide. Aim: The main aim of this study was to isolate and identify the staphylococcus aureus species, responsible for the bovine mastitis from dairy animals in different areas of Quetta city, Pakistan. Total of 20 affected samples were collected i...

A 72-year-old male, who had been catheterized 24 h ago for retention of urine, presented with pain and swelling on the tip of his penis. On examination, the catheter was in position draining clear urine, but the glans penis was found to be exposed, and his prepuce was swollen and edematous. He was unable to pull the foreskin back over the glans pen...

The purpose of the study was to evaluate the perception of influence of music among surgeons, anesthesiologist and nurses in our hospital as well as to critically evaluate whether music can be used as an aid in improving the work efficiency of medical personnel in the operation theatre (OT). A prospective, questionnaire-based cross-sectional study...

Heteroscedasticity has been a problem in statistics from the start of the field. For example, the Behrens-Fisher Problem (of testing the equality of two normal means when the variances are not known and cannot be assumed equal) has received the attention of Linnik, H. Scheffé, Welch, Chernoff, Chapman, Prokof'yev, Shishkin, B.K. Taneja, and others,...

The problem of testing equality of two means when the variances are not known has been called the most important problem of applied statistics (H. Scheffé). It has been proven that, under certain assumptions, this problem has no solution (Linnik). Thus, for most of the 20th century statisticians have been developing approximate solutions to this im...