BP's decision to sell a 49% stake in its US oil and gas pipeline network could potentially free up capital for the company, which could be used for other investments or to pay down debt. However, this move also indicates a shift in strategy for BP, which could have implications for the company's future operations and profitability. The impact on the stock price is uncertain in the short term, as it will depend on how investors interpret this move and its implications for BP's future.