Topic
Lost circulation
About: Lost circulation is a research topic. Over the lifetime, 1303 publications have been published within this topic receiving 13351 citations.
Papers published on a yearly basis
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Papers
TL;DR: In this article, a new clay ATR which has a chain-like structure and offers enormous surface area and increased reactivity was tested in different sizes that were chemically and mechanically milled.
Abstract: The idea of pushing the limits of drilling oil and gas wells by improving drilling fluids for undemanding and cost efficient drilling operations by extracting advantage from the wonders of nanotechnology forms the basis of the work presented here. Foremost, in order to highlight the significance of reducing the size distribution of particles, new clay ATR which has a chain like structure and offers enormous surface area and increased reactivity was tested in different sizes that were chemically and mechanically milled. Bentonite which is a commonly used drilling fluid additive was also tested in different particle size distribution (PSD) and rheological properties were tested. Significant reduction in viscosity with small sized particles was recorded. The tested material called ATR throughout this paper is shown to offer better functionality than bentonite without the requirement of other expensive additives. Experiments were performed with different size distributions and compositions and drastic changes in rheological properties are observed. A detailed investigation of the shear thinning behavior was also carried out with ATR samples in order to confirm its functionality for eliminating the problem of mechanical and differential pipe sticking, while retaining suitable viscosity and density for avoidance of problems like lost circulation, poor hole cleaning and inappropriate operating hydrostatic pressures.
178 citations
TL;DR: In this article, the authors provide a state-of-the-art review of fundamental studies on lost circulation and wellbore strengthening, focusing mainly on experimental and theoretical studies, rather than field experiences.
166 citations
Patent•
1 Jul 1983
TL;DR: A drilling mud, or other drilling fluid containing particulate expanded aggregates is effective to seal the fractures and openings and prevent lost circulation of the mud or fluid in a well as discussed by the authors.
Abstract: A drilling mud, or other drilling fluid containing particulate expanded aggregates is effective to seal the fractures and openings and prevent lost circulation of the mud or fluid in a well. The expanded aggregates used are inorganic clays, shales and slates which are heat treated at temperatures up to about 3000° F. to produce an expanded lattice structure having a series of interconnecting passages. The expanded aggregates are added to any conventional drilling mud, or other drilling fluids, either water-based or oil-based, in an amount sufficient to stop the fractures and openings in the formation. The proportion of the aggregates in the drilling mud, or other drilling fluid, will be varied as needed and will usually range from 1-33 parts by weight per 100 parts by weight of drilling mud. Water-based and oil-based drilling muds containing expanded aggregates are novel compositions.
165 citations
TL;DR: In this paper, yield stress fluid flows occur in a great many operations and unit processes within the oil and gas industry, including heavy oil, drilling fluids and operations, wellbore cementing, hydraulic fracturing and some open-hole completions, sealing/remedial operations.
Abstract: Yield stress fluid flows occur in a great many operations and unit processes within the oil and gas industry. This paper reviews this usage within reservoir flows of heavy oil, drilling fluids and operations, wellbore cementing, hydraulic fracturing and some open-hole completions, sealing/remedial operations, e.g., squeeze cementing, lost circulation, and waxy crude oils and flow assurance, both wax deposition and restart issues. We outline both rheological aspects and relevant fluid mechanics issues, focusing primarily on yield stress fluids and related phenomena.
155 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 32 |
| 2024 | 53 |
| 2023 | 113 |
| 2022 | 174 |
| 2021 | 72 |
| 2020 | 81 |