The Effects of Weight Material Type and Mud Formulation on Penetration Rate Using Invert Oil Systems

Rupert, J.P.; Padro, C.W.; Blattel, S.R.

doi:10.2118/10102-ms

Cited by 16 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The simplest contains only a few parameters, while as many as twenty variables have been identified for the complex rock/bit interaction. In the study (Bourgoyne et al, 1984;Beck et al, 1995;Rupert et al, 1981), it is convenient to divide the factors which affect the ROP into the list: formation characteristics, mechanical factors (e.g. WOB, bit type and RPM), hydraulic factors, drilling fluid properties.…”

Section: Rop Modelmentioning

confidence: 99%

Rate of Penetration Optimization using Moving Horizon Estimation

Sui¹,

Aadnøy²

2016

MIC

View full text Add to dashboard Cite

Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively called as drilling speed) is a critical drilling parameter to evaluate and improve drilling safety and efficiency. ROP estimation has an important role in drilling optimization as well as interpretation of all stages of the well life cycle. In this paper, we use a moving horizon estimation (MHE) method to estimate ROP as well as other drilling parameters. In the MHE formulation the states are estimated by a forward simulation with a pre-estimating observer. Moreover, it considers the constraints of states/outputs in the MHE problem. It is shown that the estimation error is with input-to-state stability. Furthermore, the ROP optimization (to achieve minimum drilling cost/drilling energy) concerning with the efficient hole cleaning condition and downhole environmental stability is presented. The performance of the methodology is demonstrated by one case study.

show abstract

Section: Rop Modelmentioning

confidence: 99%

Rate of Penetration Optimization using Moving Horizon Estimation

Sui¹,

Aadnøy²

2016

MIC

View full text Add to dashboard Cite

show abstract

“…In the study of drilling [10], [11], [12], it is convenient to divide the factors which affect the ROP into the following list:…”

Section: Rop Modelmentioning

confidence: 99%

Real-time optimization of rate of penetration during drilling operation

Sui

Nybø

Azizi

2013

2013 10th IEEE International Conference on Control and Automation (ICCA)

View full text Add to dashboard Cite

The increase of drilling safety and the reduction of drilling operation costs, especially the improvement of drilling efficiency, are two important considerations. In general the rate of penetration (ROP) optimization means that the drilling parameters such as weight on bit (WOB) and rotary speed (RPM) are adjusted to drill the present formation most efficiently. In this paper, the Bourgoyne and Young ROP model had been selected to study the effects of several parameters during drilling operation. We present an advanced method for the ROP calculation and its optimization. A moving-horizon multiple regression method is proposed, which reduces the estimation error of the existing ROP models by continuously calibrating the model coefficients based on real-time data. Furthermore, a model predictive control (MPC) strategy is applied to achieve the ROP optimization to satisfy drilling requirements. The performance of the methodology is demonstrated by using realworld data from a North Sea well.

show abstract

“…24−26 There are several benefits associated with both materials, such as the minimum impact on rheology, improvement in the rate of penetration, less dilution, and better solid tolerance. 25,27,28 However, the potential issues with them are the abrasiveness and magnetic characteristics of iron oxide, as both affect the tubular and directional tools, respectively. 24,29 The filter cake formed using ilmenite and hematite as weighting materials can be dissolved in sulfuric acid (H 2 SO 4 ) and HCl.…”

Section: Introductionmentioning

confidence: 99%

Application of Anhydrous Calcium Sulfate as a Weighting Agent in Oil-Based Drilling Fluids

et al. 2021

View full text Add to dashboard Cite

The hydrostatic pressure exerted during the drilling operation is controlled by adding a weighting agent into drilling fluids. Various weighting materials such as barite, calcium carbonate, hematite, and ilmenite are used to increase the density of drilling fluids. Some weighting additives can cause serious drilling problems, including particle settling, formation damage, erosion, and insoluble filters. In this study, anhydrite (calcium sulfate) is used as a weighting additive in the oil-based drilling fluid (OBDF). Anhydrite is an abundantly available resource used in the preparation of desiccant, plaster of Paris, and Stucco. Anhydrite application in drilling fluids is discouraged because of its filter cake removal issue. This study investigated anhydrite (anhydrous CaSO 4 ) as a weighting agent and its filter cake removal procedure for OBDFs. The anhydrite performance as a weighting agent in OBDFs was evaluated by conducting several laboratory experiments such as density, rheology, fluid loss, and electrical stability and compared with that of commonly used weighting materials (barite, calcium carbonate, and hematite). The anhydrite was mixed in three different concentrations (62, 124, and 175 ppb) in a base-drilling fluid. The results showed that calcium sulfate enhanced rheological parameters such as plastic viscosity, yield point, apparent viscosity, and gel strength. CaSO 4 reduced the fluid loss and provided better control over the fluid loss than other tested weighting materials tested at the same concentration of 124 ppb. Similarly, the emulsion stability was decreased with the increase in the amount of calcium sulfate in the OBDF. The calcium sulfate filter cake can be removed easily from the wellbore with an efficiency of 83 to 91% in single-stage and multistage removal processes, respectively using the newly developed formulation consisting of 20 wt % potassium salt of glutamic acid-N,N-diacetic acid (K 4 GLDA) as a chelating agent, 6 wt % potassium carbonate, and 10% ethylene glycol monobutyl ether. The introduction of anhydrite as a weighting agent can be more beneficial for both academia and industry.

show abstract

The Effects of Weight Material Type and Mud Formulation on Penetration Rate Using Invert Oil Systems

Cited by 16 publications

References 0 publications

Rate of Penetration Optimization using Moving Horizon Estimation

Rate of Penetration Optimization using Moving Horizon Estimation

Real-time optimization of rate of penetration during drilling operation

Application of Anhydrous Calcium Sulfate as a Weighting Agent in Oil-Based Drilling Fluids

Contact Info

Product

Resources

About