EXACTA-FRAC ENERGY SERVICES, INC. (Conroe, TX)
Packers for isolating fluid pressures in well bores with cased valves are well known in the art. A lot of these packers are single-use packs that cannot be retrieved from the well bore. One example of a single-use packer is the frac plug used to isolatefracturing fluid pressure in hydrocarbon well completion or recompletion procedures. A frac plug can be removed from the bore through drilling it out using the aid of a drill connected to a tubing string. This drill-out procedure is made easier by providing a frac plug made entirely made of composite material. When such a frac plug is described in Applicant’s co-pending U.S. patent application Ser. No. No. 15/935,163 which is a Composite Fract Plug, that was filed Mar. 26, 2018 and the complete specification is included herein by reference. Frac plugs should contain high fluid pressures inside cased well bores, typically at high temperatures. The fluid pressure can cause the main sealing element of the frac plugs, to expand and loose their fluid sealing contact with the well bore casing. Anti-extrusion inhibitors can help limit sealing element extrusion and maintain the sealing element within contact with the casing of the well bore. Anti-extrusion rings comprise one kind of anti-extrusion inhibitor that has been proved to be effective in inhibiting sealing element extrusion. However anti-extrusion rings can be dislocated or deformed by the extruding of the main sealing element. It is preferable to have an anchoring restrictor for extrusion that is able to engage the casing to resist the extrusion pressure of the main sealing element.
The extreme pressure of fluids can also cause to cause the frac plug to move within the cased well bore. The frac plug is fitted with “slips” that grab the casing to anchor the frac plug within the well bore. The slips travel up a slip ramp to a setcondition, so the greater the fluid pressure on the frac-plug, the more the slips will bite and grip the casing to anchor the frac plug to the well bore. However, the thrust load on the slips can overpower the material strength of the slip bodies or anchorelements. It is also suggested to use an extra anchor for frac plug slips.
Therefore, there is a requirement to have an anchoring extrusion limiter as well as one that is a frac plug with the same.Click here to view the patent on USPTO website.
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The government grants patents to protect an invention, patents grant the inventor exclusive rights to create, use, sell and promote the invention? Society is benefited when a brand new technology is brought to the market. These benefits may be realized directly by people who are able to achieve previously impossible feats and indirectly by the opportunities for economic growth that innovation offers (business growth, jobs).
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The first step to get your patent is to conduct an internet search for patents. You can do a google patent search or do a USPTO search. Patent-pending is the name used to describe the product that has been covered by the patent application. You can search the public pair to locate the patent application. When the patent office is satisfied with your application, you’ll be able do an examination of the patent number to find the patent issued. Your product is now patent-able. Alongside the USPTO search engine, you may also use other search engines, such as espacenet, as detailed below. Patent lawyers or a patent attorney can help you through the procedure. In the US patents are granted by the US patent and trademark office or the United States patent and trademark office, which is also responsible for examining trademark applications.
Are you interested in finding other similar patents? These are the steps:
1. Think of terms to describe your invention, based on its purpose, composition, and use.
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- What are the technical terms and keywords that describe the essence of an invention? A technical dictionary will help you find the appropriate terms.
2. Utilize these terms to locate pertinent Cooperative Patent Classifications for your invention at the Classification Text Search Tool. If you’re unable to locate the appropriate classification to describe your invention, scan through the Schemas of classes (class schedules). If you don’t see any results using the Classification Text Search, you might consider substituting your words that describe your invention with synonyms.
3. Check the CPC Classification Definition for confirmation of the CPC classification you’ve found. The hyperlink to a CPC classification definition will be given in the event that the title of the classification is a blue square with a “D” to its left. CPC classification definitions can help identify the specific classification’s scope, so you are certain to pick the most appropriate. In addition, these definitions can include search tips and other suggestions that may be useful for further study.
4. The Patents Full-Text Database and the Image Database allow you to retrieve patent documents that include the CPC classification. You can review and narrow down the most relevant patent documents by looking first at abstract and drawings representative of.
5. Use this selection of the most relevant patent publications to look at each in detail for similarity to your own invention. Be sure to read the specification and claims. Refer to the applicant and patent examiner to obtain additional patents.
6. Search for patent applications that have been published using the CPC classification you chose in Step 3 from the Applications Full-Text and Image Database. You can apply the same search strategy as Step 4, narrowing your search results to the most pertinent patent applications by examining the abstract and representative drawings on each page. After that, you must review the patent applications that have been published carefully, paying special attention to the claims as well as other drawings.
7. Find other US patents by keyword searching in PatFT or AppFT databases, classification search of non-U.S. patents according to below, and searching for non-patent literature disclosures of inventions using internet search engines. For instance:
- Add keywords to your search. Keyword searches may turn up documents that are not well-categorized or have missed classifications during Step 2. For example, US patent examiners often supplement their classification searches with keyword searches. Think about the use of technical engineering terminology rather than everyday words.
- Search for foreign patents using the CPC classification. Then, re-run the search using international patent office search engines such as Espacenet, the European Patent Office’s worldwide patent publication database of over 130 million patent publications. Other national databases include:
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- Japan Patent Office (JPO) – with access to machine translations of Japanese patents.
- World Intellectual Property Organization (WIPO) offers PATENTSCOPE with a full-text search of published international patent applications and machine translations for some documents, as well as a list of international patent databases.
- Korean Intellectual Property Rights Information Service (KIPRIS)
- State Intellectual Property Office (SIPO) with machine translation of Chinese patents.
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To review your search, you can hire a registered patent attorney to assist. A preliminary search will help one better prepare to talk about their invention and other related inventions with a professional patent attorney. In addition, the attorney will not spend too much time or money on patenting basics.